Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhieu tang » chieu sang, nhiet nang
quang toan » quang tuan, quang tran, quang doan
hieu lang » chieu sang, hieu quang, hieu van
trinh cua » tinh cua, trinh luat, trinh quan
dung cong » dung trong
vang toan » van toan, dang toan, vang trang
cua dung » cua dang, cua dong, qua dung

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 cua dung cong ((vang toan) OR (quang toan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (nhieu tang)) - hanh trinh cua dung cong ((vang toan) OR (quang toan)) tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (nhieu tang)) - hanh trinh cua dung cong ((vang toan) OR (quang toan)) tap*".