Perhaps you should try some spelling variations:
thieu nang » thien nang, thieu khang, thieu quang
doanh van » doan van, doanh va, doanh ban
hieu cac » hieu luc, hieu va, vien cac
hieu van » hieu va, thien van, lieu va
va doanh » van doanh, vay doanh, va danh
te sach » toc sach
nang xa » nang x, lang xa, nang ma
van cua » vang cua, ban cua, dan 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 thieu nang xa hoi. hieu ((hieu cac) or (hieu van)) nuoc va doanh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thieu nang xa hoi. hieu ((hieu cac) OR (hieu van)) nuoc va doanh van cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach thieu nang xa hoi. hieu ((hieu cac) or (hieu van)) nuoc va doanh van cua tre*.