Perhaps you should try some spelling variations:
viec thong » viec thuong, vien thong, viet thong
nhieu tang » chieu sang, nhiet nang
hieu lang » chieu sang, hieu quang, hieu van
canh manh » lanh manh, canh tranh, cach mang
dung cong » dung trong
manh cua » doanh cua, ban cua
cua dung » cua dang, cua dong, qua dung
thong tu » phong tuc, thong tin, thong ke

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((nhieu tang) or (hieu lang)) - canh manh cua dung cong viec thong tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((nhieu tang) OR (hieu lang)) - canh manh cua dung cong viec thong tu.
• Adding a wildcard symbol may retrieve word variants: doi ((nhieu tang) or (hieu lang)) - canh manh cua dung cong viec thong tu*.