Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhung cong » thong cong, hang cong, nhung don
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
trinh va » trinh van, trinh vat, trinh ve
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: ((doi chieu) or (toc thieu)) tach - hanh trinh va ((nhung cong) or (dung cong)) tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) tach - hanh trinh va ((nhung cong) OR (dung cong)) tan toan cau.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (toc thieu)) tach - hanh trinh va ((nhung cong) or (dung cong)) tan toan cau*.