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 ran » tan tran, tan van, tan san
ran cau » van cau, ban cau, can cau

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 ran 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 ran cau.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (toc thieu)) tach - hanh trinh va ((nhung cong) or (dung cong)) tan ran cau*.