Perhaps you should try some spelling variations:
phuong hanh » phuong thanh, phuong anh, phuong danh
theo chieu » theo tieu, theo chu, thi chieu
hanh doanh » hang doanh, chinh doanh, doanh doanh
quan nhung » cua nhung, luan chung, quang hung
qua nhung » cua nhung, qua chung, chua nhung
hanh luan » khanh luan, hang luan, hanh luat
ho chieu » hoc thieu, doi chieu, mot chieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (theo chieu)) xanh - hanh doanh ((qua nhung) or (quan nhung)) phuong hanh luan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) xanh - hanh doanh ((qua nhung) OR (quan nhung)) phuong hanh luan van.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) xanh - hanh doanh ((qua nhung) or (quan nhung)) phuong hanh luan van".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) xanh - hanh doanh ((qua nhung) or (quan nhung)) phuong hanh luan van*.