Perhaps you should try some spelling variations:
thieu nang » thien nang, thieu khang, thieu quang
dong cua » dung cua, cong cua, huong cua
te sach » toc sach
hieu va » lieu va, hieu qua
va cham » va chat, va tham
ha dong » hoat dong, van dong
truc va » thuc va, thuc vat, trung va
cua te » cua tu
luc va » duc va, tuc va, loc va
xac va » tac va, ac va, bac va
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu va cham ((xac va) or (((luc va) or (truc va)))) ha dong cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thieu nang x hoi. hieu va cham ((xac va) OR (((luc va) OR (truc va)))) ha dong cua te.
• Adding a wildcard symbol may retrieve word variants: te sach thieu nang x hoi. hieu va cham ((xac va) or (((luc va) or (truc va)))) ha dong cua te*.