Perhaps you should try some spelling variations:
nang luong » nang song
canh doanh » hanh doanh, chinh doanh, doanh doanh
hoc thieu » toc thieu
doanh cua » doanh luan
cua nang » chua nang, cua dang, cua hang
doan van » doan va, hoang van, luan van
dan van » dang van, dao van, tan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (hoc hien)) xanh - canh doanh cua nang luong ((dan van) OR (doan van)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc hien)) xanh - canh doanh cua nang luong ((dan van) OR (doan van)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (hoc hien)) xanh - canh doanh cua nang luong ((dan van) OR (doan van)) ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (hoc hien)) xanh - canh doanh cua nang luong ((dan van) OR (doan van)) ban*.