Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
nhon lang » nhan lang, thon lang, nhanh lang
hieu lang » chieu sang, hieu quang, nhieu tang
tong cong » trong cong, cong cong, dung cong
trang va » tran van, hang va
cong tac » cong ty
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban
va tong » va thong, va tuong, va trong

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

• Performing a fuzzy search may retrieve terms with similar spellings: thien ((nhon lang) or (hieu lang)) - hanh trang va tong cong tac ((toan cau) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thien ((nhon lang) OR (hieu lang)) - hanh trang va tong cong tac ((toan cau) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thien ((nhon lang) or (hieu lang)) - hanh trang va tong cong tac ((toan cau) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: thien ((nhon lang) or (hieu lang)) - hanh trang va tong cong tac ((toan cau) OR (toan tap))*.