Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
cong khanh » cong thanh, cong khan, cong nhan
khanh toan » thanh toan, khanh thanh, khanh thuan
hieu sang » chieu sang, hieu lang, hieu quang
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu, hoc hien
toan cau » 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: doc hieu sang - ((((hanh trinh) OR (canh tranh))) or (hanh chinh)) cua nhung cong khanh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sang - ((((hanh trinh) OR (canh tranh))) OR (hanh chinh)) cua nhung cong khanh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu sang - ((((hanh trinh) OR (canh tranh))) or (hanh chinh)) cua nhung cong khanh toan cau".
• Adding a wildcard symbol may retrieve word variants: doc hieu sang - ((((hanh trinh) OR (canh tranh))) or (hanh chinh)) cua nhung cong khanh toan cau*.