Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh dai » hanh tai, hanh dao, vanh dai
cua viet » ca viet, hoa viet, cua vat
te sach » toc sach
sach lo » sach dao, sach doi, sach hoi
lo nang » ho nang, ly nang, loai nang
van cam » van nam, van lam, van cau
tuc va » thuc va, truc va, tuc xa
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: te sach lo nang x hoi. hieu van cam ((tuc va) or (thuc vat)) hanh dai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach lo nang x hoi. hieu van cam ((tuc va) OR (thuc vat)) hanh dai cua viet.
• Adding a wildcard symbol may retrieve word variants: te sach lo nang x hoi. hieu van cam ((tuc va) or (thuc vat)) hanh dai cua viet*.