Perhaps you should try some spelling variations:
thieu nang » thien nang, thieu khang, thieu quang
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu va » hieu qua
soc van » hoc van, oc van, sac van
hanh de » hanh ve, hanh kem
de cua » le cua, te cua, dieu cua
cua tu » cua tuc, cua su, cua cu

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 va) or (lieu va)) cham soc van hanh de cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thieu nang xa hoi. ((hieu va) OR (lieu va)) cham soc van hanh de cua tu.
• Adding a wildcard symbol may retrieve word variants: te sach thieu nang xa hoi. ((hieu va) or (lieu va)) cham soc van hanh de cua tu*.