Perhaps you should try some spelling variations:
danh thiet » hanh thiet, dan thiet, dinh thiet
thiet nang » nhiet nang, thien nang, thi nang
kham chua » kham pha
hieu van » hieu va, thien van, hieu ve
hanh tai » thanh tai, hang tai, han tai
so danh » do danh, so sanh, so dan
nang xa » nang x, lang xa, nang ma
chua va » chuc va, chua may, chuan ha
va hanh » van hanh, va thanh, va danh
tai cua » thai cua, tai cuc, tri cua
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so danh thiet nang xa hoi. ((hieu van) or (lieu va)) kham chua va hanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so danh thiet nang xa hoi. ((hieu van) OR (lieu va)) kham chua va hanh tai cua te.
• Adding a wildcard symbol may retrieve word variants: so danh thiet nang xa hoi. ((hieu van) or (lieu va)) kham chua va hanh tai cua te*.