Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
thuc va » thuc vat, thuc dan, thuc day
sach ly » sach y, sach ty, sach hay
van cam » van nam, van lam, van cau
nang xa » nang x, lang xa, nang ma
sach lo » sach dao, sach doi, sach hoi
cuu tre » cua tre, cau tren, cau treo
tuc va » truc va, tuc xa, duc va
vi cuu » vi luu, vinh cuu

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 ly) OR (sach lo)) nang xa hoi. hieu van cam ((tuc va) or (thuc va)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ly) OR (sach lo)) nang xa hoi. hieu van cam ((tuc va) OR (thuc va)) hanh vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ly) OR (sach lo)) nang xa hoi. hieu van cam ((tuc va) or (thuc va)) hanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ly) OR (sach lo)) nang xa hoi. hieu van cam ((tuc va) or (thuc va)) hanh vi cuu tre*.