Perhaps you should try some spelling variations:
thiet nang » nhiet nang, thien nang, tiem nang
hang cong » dang cong, hang nong, bang cong
van thanh » ban thanh, van tuan
thi nang » thi cong, ki nang, thi hanh
tranh va » tranh van, trang va, trinh va
van quan » van ban
va hang » van hang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((thiet nang) OR (thi nang)) - canh tranh va hang cong ((van thanh) or (van quan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((thiet nang) OR (thi nang)) - canh tranh va hang cong ((van thanh) OR (van quan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((thiet nang) OR (thi nang)) - canh tranh va hang cong ((van thanh) or (van quan)) cau".
• Adding a wildcard symbol may retrieve word variants: ho ((thiet nang) OR (thi nang)) - canh tranh va hang cong ((van thanh) or (van quan)) cau*.