Perhaps you should try some spelling variations:
thien van » thi van
nam thuc » nam thuoc, am thuc, nam thu
van hanh » van thanh, ban hanh, van ban
te sach » toc sach
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
van anh » van thanh, tuan anh, van minh
doi cua » dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet

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 ty ((nang xa) or (van xay)) hoi. thien van nam thuc ((van hanh) or (van anh)) doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((nang xa) OR (van xay)) hoi. thien van nam thuc ((van hanh) OR (van anh)) doi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ty ((nang xa) or (van xay)) hoi. thien van nam thuc ((van hanh) or (van anh)) doi cua tre*.