Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
trinh cua » tinh cua, trinh luat, trinh quan
chao chu » cho chu, cua chu, cao cho
toan cao » toan tap
toan ban » van ban
chu han » chu van

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 han - hanh trinh cua ((nhung cong) or (thong cong)) san ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao chu han - hanh trinh cua ((nhung cong) OR (thong cong)) san ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: chao chu han - hanh trinh cua ((nhung cong) or (thong cong)) san ((toan cao) or (toan ban))*.