Perhaps you should try some spelling variations:
doanh luan » doanh nhan
hang doanh » hanh doanh, nhung doanh, van doanh
hoc thien » hoc thieu, hoc thiet, hoc tien
luan nang » luan van, van nang, luan san
nang cong » nang song, dang cong, bang cong
cong san » cong tac
pham ca » pham can, pham ma, pham ba
pham va » pham van, pham ma, pham tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thien) OR (hoc hien)) dang - hang doanh luan nang cong san ((pham ca) or (pham va))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thien) OR (hoc hien)) dang - hang doanh luan nang cong san ((pham ca) OR (pham va)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thien) OR (hoc hien)) dang - hang doanh luan nang cong san ((pham ca) or (pham va))".
• Adding a wildcard symbol may retrieve word variants: ((hoc thien) OR (hoc hien)) dang - hang doanh luan nang cong san ((pham ca) or (pham va))*.