Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhieu tang » chieu sang, nhiet nang
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, hieu van
trinh cua » tinh cua, trinh luat, trinh quan
cua thong » cua thuong, cua khong, cua tong
cong san » cong tac
san toan » van toan, dan toan, manh toan
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: hoc ((hieu lang) or (nhieu tang)) - hanh trinh cua thong cong san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu lang) OR (nhieu tang)) - hanh trinh cua thong cong san toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu lang) or (nhieu tang)) - hanh trinh cua thong cong san toan cao*.