Perhaps you should try some spelling variations:
thieu nang » thien nang, thieu khang, thieu quang
hieu cac » hieu luc, hieu va, vien cac
hieu van » hieu va, thien van, lieu va
danh vai » danh sai, danh va, doanh van
te sach » toc sach
nang xa » nang x, lang xa, nang ma
va danh » va dinh, va dan, va hanh
vai cua » dai cua, hai cua, lai 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 danh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thieu nang xa hoi. hieu ((hieu cac) OR (hieu van)) nuoc va danh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach thieu nang xa hoi. hieu ((hieu cac) OR (hieu van)) nuoc va danh vai cua tre*.