Perhaps you should try some spelling variations:
thien van » thi van
dang van » hoang van, hang va
tu sach » thu sach, su sach, te sach
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va hanh, dia danh
van cau » van dau, van hau, van chat
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
va dan » ca dan, va dao, va dau

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 y ((nang xa) or (dang van)) hoi. thien van cau truc ((va danh) or (va dan)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang xa) OR (dang van)) hoi. thien van cau truc ((va danh) OR (va dan)) vai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang xa) or (dang van)) hoi. thien van cau truc ((va danh) or (va dan)) vai cua tre*.