Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
cong luong » cong thuong, nang luong, cong dong
luong toan » luong thanh, truong toan, luong tai
quan dung » quang dung, quan duong, quan dong
ho chieu » theo chieu, hoc thieu, doi chieu
qua dung » quang dung, su dung, qua song
toan cao » toan ban, toan tap
cho chu » cho thue

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