Perhaps you should try some spelling variations:
hanh trinh » canh tranh
hieu manh » chieu xanh, hieu nganh, dieu hanh
dung cong » dung trong
thanh lap » thanh san, phan lap, thanh hai
hoc hieu » hoc thieu, hoc hien, doc hieu
qua dung » quang dung, su dung, qua song
cong san » cong tac
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - ((hanh trinh) or (hanh chinh)) qua dung cong san ((than cau) or (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - ((hanh trinh) OR (hanh chinh)) qua dung cong san ((than cau) OR (thanh lap)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - ((hanh trinh) or (hanh chinh)) qua dung cong san ((than cau) or (thanh lap))*.