Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
doi chiu » doi chieu, doi chi, hoi chiu
ban cong » bang cong, van cong, phan cong
tan toan » tan tran, dan toan, tam toan
tap toan » tap doan, tap quan, bai toan
van toan » van tuan, van tan, van thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chiu trach - hanh trinh cua ban cong ((((tan toan) OR (tap toan))) or (van toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chiu trach - hanh trinh cua ban cong ((((tan toan) OR (tap toan))) OR (van toan)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chiu trach - hanh trinh cua ban cong ((((tan toan) OR (tap toan))) or (van toan)) cau*".