Perhaps you should try some spelling variations:
hoc thuyet » hoc chuyen
phung cong » nhung cong, phong cong, nhung chong
hoc quyet » hoc quyen, hoc quy, hoc tuyen
hanh luan » khanh luan, hang luan, hanh luat
van phung » van phong, van hung, van chuong
dan toan » van toan, dan than, manh toan
dan chan » dan gian, dan ca, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc quyet) OR (hoc thuyet)) thanh - hanh luan van phung cong ((dan toan) or (dan chan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc quyet) OR (hoc thuyet)) thanh - hanh luan van phung cong ((dan toan) OR (dan chan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc quyet) OR (hoc thuyet)) thanh - hanh luan van phung cong ((dan toan) or (dan chan)) cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc quyet) OR (hoc thuyet)) thanh - hanh luan van phung cong ((dan toan) or (dan chan)) cau*.