Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trinh » canh tranh, hanh chinh
chu manh » ho manh, chu han, thu minh
trinh va » trinh van, trinh vat, trinh ve
cong san » cong tac
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
chu van » cuu van, chu han

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

• Performing a fuzzy search may retrieve terms with similar spellings: chao ((chu manh) or (chu van)) - hanh trinh va nhung cong san ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao ((chu manh) OR (chu van)) - hanh trinh va nhung cong san ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: chao ((chu manh) or (chu van)) - hanh trinh va nhung cong san ((toan cau) or (toan ban))*.