Perhaps you should try some spelling variations:
hoc thieu » toc thieu
canh doan » canh dan, hanh doanh, chan doan
doan van » doan va, hoang van, luan van
van dung » van dong, xay dung, tin dung
dong san » dong bang, dong von, dong ha
cong san » cong tac
toan tap » toan ban

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 doan van dung ((dong san) or (cong san)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc hien)) xanh - canh doan van dung ((dong san) OR (cong san)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) OR (hoc hien)) xanh - canh doan van dung ((dong san) or (cong san)) toan tap".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) OR (hoc hien)) xanh - canh doan van dung ((dong san) or (cong san)) toan tap*.