Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
tu sach » thu sach, su sach, te sach
ty hang » ty xang, thi hang, thu hang
ly hang » ly quang
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
cua te » cua tu
ve cam » ve cham, ve cac, va cam
tuc va » thuc va, truc va, tuc xa
cua su » qua su

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty hang) OR (ly hang)) xa hoi. hieu ve cam tuc va thanh vi ((cua te) OR (cua su))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty hang) OR (ly hang)) xa hoi. hieu ve cam tuc va thanh vi ((cua te) or (cua su))~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty hang) OR (ly hang)) xa hoi. hieu ve cam tuc va thanh vi ((cua te) or (cua su))*.