Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
lieu quang » hieu quang, thieu quang, le quang
trinh quan » tinh quang, trinh luat, trinh han
quan nhung » qua nhung, cua nhung, luan chung
lieu quan » lien quan, hieu qua, lieu van
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((lieu quang) or (lieu quan)) - hanh trinh quan nhung ((cong tan) OR (cong tac)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((lieu quang) OR (lieu quan)) - hanh trinh quan nhung ((cong tan) OR (cong tac)) phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((lieu quang) or (lieu quan)) - hanh trinh quan nhung ((cong tan) OR (cong tac)) phan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((lieu quang) or (lieu quan)) - hanh trinh quan nhung ((cong tan) OR (cong tac)) phan cau*.