Perhaps you should try some spelling variations:
thien van » thi van
hanh gian » thanh gian, thanh giang, manh giang
gian cua » gian xu, ban cua
sach thu » sach thue, sach thieu, sach tham
hieu van » hieu va, lieu va, hieu ve
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, cam tu, nam thuc
sach ty » sach y, sach tu, xach tay
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sach ty) or (sach thu)) lang xa hoi. ((hieu van) or (thien van)) cam tuc va hanh gian cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach ty) OR (sach thu)) lang xa hoi. ((hieu van) OR (thien van)) cam tuc va hanh gian cua tre.
• Adding a wildcard symbol may retrieve word variants: toc ((sach ty) or (sach thu)) lang xa hoi. ((hieu van) or (thien van)) cam tuc va hanh gian cua tre*.