Perhaps you should try some spelling variations:
doanh thanh » danh thanh, doanh nhan, dinh thanh
vuong dang » duong dang, huong dang, vuong dung
luan hoan » luan van
ho chieu » theo chieu, hoc thieu, doi chieu
doc hieu » toc thieu, hoc thieu, hoc hien
dang thi » hoang thi, dang khoi
thi hai » thi mai, thi hanh

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 (doc hieu)) xanh - doanh thanh ((quan hoang) or (luan hoan)) vuong dang thi hai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doc hieu)) xanh - doanh thanh ((quan hoang) OR (luan hoan)) vuong dang thi hai.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doc hieu)) xanh - doanh thanh ((quan hoang) or (luan hoan)) vuong dang thi hai*.