Perhaps you should try some spelling variations:
hanh truong » hanh trong, anh truong, chinh truong
manh truong » manh trung, manh tuong, anh truong
quan dung » quang dung, quan duong, qua dung
dung cong » dung trong
doc hieu » toc thieu, hoc thieu, hoc hien
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 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) or (ho chieu)) sang - ((hanh truong) OR (manh truong)) quan dung cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (ho chieu)) sang - ((hanh truong) OR (manh truong)) quan dung cong tan toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) or (ho chieu)) sang - ((hanh truong) OR (manh truong)) quan dung cong tan toan cau*".