Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhieu tang » chieu sang, nhiet nang
hieu lang » chieu sang, hieu quang, hieu van
quan ban » quang ban, quan van, luan ban
cong tan » cong tac, cong san, cong thanh
tran cau » tran chau, toan cau, ran cau
qua ban » cua ban, qua quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) or (nhieu tang)) - hanh trinh ((quan ban) OR (qua ban)) cong tan tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (nhieu tang)) - hanh trinh ((quan ban) OR (qua ban)) cong tan tran cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (nhieu tang)) - hanh trinh ((quan ban) OR (qua ban)) cong tan tran cau".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (nhieu tang)) - hanh trinh ((quan ban) OR (qua ban)) cong tan tran cau*.