Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh ve » hanh ve, thanh va, thanh vien
su sach » so sach, vu sach
va nang » van nang, da nang, cam nang
nang xa » nang x, lang xa, nang ma
cac tac » cac toc, cac bac, cac dac
cua tre » cua te, cuu tre, cua triet
tac va » tac da, tac xa, tuc va
ve cua » le cua, de cua, te cua

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: ((su sach) OR (((so sanh) OR (do sanh)))) va nang xa hoi. lieu va cac tac va thanh ve cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (((so sanh) OR (do sanh)))) va nang xa hoi. lieu va cac tac va thanh ve cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (((so sanh) OR (do sanh)))) va nang xa hoi. lieu va cac tac va thanh ve cua tre*.