WordNet (r) 3.0 (2006):

turn to
    v 1: speak to; "He addressed the crowd outside the window" [syn:
         address, turn to]
    2: direct one's interest or attention towards; go into; "The
       pedophile turned to boys for satisfaction"; "People turn to
       mysticism at the turn of a millennium"

Moby Thesaurus II by Grady Ward, 1.0:

110 Moby Thesaurus words for "turn to":
   accept, advert to, alter into, assume, attack, attempt, attend to,
   be aware of, be converted into, be engrossed in, become, begin,
   blast away, blast off, bring into play, buckle to, change into,
   come round to, commence, convert to use, dive in, dive into,
   drink in, embark in, embark upon, endeavor, engage in,
   enlist into service, enter on, enter upon, evolve into,
   fall back upon, fall into, fall to, get busy, get cracking,
   get going, get to, get under way, get with it, give heed to,
   give mind to, give thought to, go about, go ahead, go at,
   go in for, go into, go to it, go upon, have at, have recourse to,
   head into, hop to it, impress, jump off, jump to it, kick off,
   lapse into, launch forth, launch into, lay about, light into,
   look to, melt into, move into, not forget, open into, pass into,
   pay attention to, pay regard to, pitch in, pitch into, plunge into,
   proceed to, put in requisition, recur to, refer to, resort to,
   revert to, ripen into, run into, sail into, see to, send off,
   set about, set at, set forward, set going, set in, set out,
   set sail, set to, set to work, settle into, shift into, start,
   start in, start off, start out, tackle, take off, take on, take to,
   take up, turn into, turn to use, undertake, venture upon,
   wade into