Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhieu tang » chieu sang, nhiet nang
trinh quan » tinh quang, trinh luat, trinh han
quan duong » tuan duong, quan dong, qua duong
hieu lang » chieu sang, hieu quang, hieu van
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cau » 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: hoi ((hieu lang) OR (nhieu tang)) - hanh trinh quan duong ((cong dan) or (cong tan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi ((hieu lang) OR (nhieu tang)) - hanh trinh quan duong ((cong dan) OR (cong tan)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoi ((hieu lang) OR (nhieu tang)) - hanh trinh quan duong ((cong dan) or (cong tan)) toan cau".
• Adding a wildcard symbol may retrieve word variants: hoi ((hieu lang) OR (nhieu tang)) - hanh trinh quan duong ((cong dan) or (cong tan)) toan cau*.