Perhaps you should try some spelling variations:
thai tren » thai tran, thi tren, thai trang
chau tre » chay tren, chau tho, cho tre
sach thu » sach thue, sach thieu, sach tham
ban hanh » ban hang
xuc ban » duc ban, cuc ban, quoc ban
hanh va » hang va, hanh vi
cac xuc » cam xuc, cac nuoc, chat xuc
sach ty » sach y, sach tu, xach tay
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach ty) OR (sach thu)) nang x hoi. hieu ve cac xuc ban hanh va ((chau tre) or (thai tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach thu)) nang x hoi. hieu ve cac xuc ban hanh va ((chau tre) OR (thai tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ty) OR (sach thu)) nang x hoi. hieu ve cac xuc ban hanh va ((chau tre) or (thai tren))".
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) OR (sach thu)) nang x hoi. hieu ve cac xuc ban hanh va ((chau tre) or (thai tren))*.