Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
theo chieu » theo tieu, ho chieu, thi chieu
chua nang » chuc nang, chua xang, kha nang
nang cong » nang song, dang cong, bang cong
theo chu » cho chu, chao chu, theo yeu
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (theo chu)) xanh - ((hanh trinh) OR (canh tranh)) chua nang cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo chu)) xanh - ((hanh trinh) OR (canh tranh)) chua nang cong tan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (theo chu)) xanh - ((hanh trinh) OR (canh tranh)) chua nang cong tan toan cao".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo chu)) xanh - ((hanh trinh) OR (canh tranh)) chua nang cong tan toan cao*.