Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hung luong » hung vuong, dung luong, hung cuong
hang luong » nang luong, hang thuong, hoang vuong
trinh han » trinh quan
theo cuu » theo chu, khao cuu, thao cua
tai toan » bai toan, tap toan, tam toan
tai tuan » tri tuan, ta tuan, tai quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo cuu tinh - hanh trinh han ((hung luong) or (hang luong)) ((tai toan) OR (tai tuan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo cuu tinh - hanh trinh han ((hung luong) OR (hang luong)) ((tai toan) OR (tai tuan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo cuu tinh - hanh trinh han ((hung luong) or (hang luong)) ((tai toan) OR (tai tuan)) ban".
• Adding a wildcard symbol may retrieve word variants: theo cuu tinh - hanh trinh han ((hung luong) or (hang luong)) ((tai toan) OR (tai tuan)) ban*.