Perhaps you should try some spelling variations:
nhieu tang » chieu sang, hieu lang, nhiet nang
chieu xanh » chieu sach, chieu sang, chieu tinh
trinh quan » tinh quang, trinh luat
thong cong » trong cong, tong cong, thong thong
cong san » cong tac
san than » sang than, san thanh, ban than
than cau » toan cau, phan cau, than cap

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

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