Perhaps you should try some spelling variations:
hanh trinh » canh tranh
quan nhung » qua nhung, cua nhung, luan chung
nhung cong » dung cong, thong cong, hang cong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap
doi chi » doi khi

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 (doi chi)) tinh - ((hanh trinh) OR (hanh chinh)) quan nhung cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chi)) tinh - ((hanh trinh) OR (hanh chinh)) quan nhung cong tan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (doi chi)) tinh - ((hanh trinh) OR (hanh chinh)) quan nhung cong tan toan cao".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chi)) tinh - ((hanh trinh) OR (hanh chinh)) quan nhung cong tan toan cao*.