Perhaps you should try some spelling variations:
sach thue » sach thieu, sach tham, cach thuc
sach thu » sach thieu, sach tham, cach thuc
hanh dai » hanh tai, hanh dao, vanh dai
thuc va » thuc vat, thuc dan, thuc day
van cam » van nam, van lam, van cau
thi van » thi lan, thi hanh, thi nang
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach thu) OR (sach thue)) lang xa hoi. thi van cam ((luc va) or (thuc va)) hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thu) OR (sach thue)) lang xa hoi. thi van cam ((luc va) OR (thuc va)) hanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach thu) OR (sach thue)) lang xa hoi. thi van cam ((luc va) or (thuc va)) hanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach thu) OR (sach thue)) lang xa hoi. thi van cam ((luc va) or (thuc va)) hanh dai cua tre*.