Perhaps you should try some spelling variations:
nhieu tang » chieu sang, nhiet nang
thanh tung » thanh cong
tang duong » tang cuong, tang dong, tuong duong
hieu lang » chieu sang, hieu quang, hieu van
cua tang » cua dang, cua hang, ca tang
duong va » duong van, dung va, luong va
toan cau » toan cao, toan ban, toan tap
va toan » van toan, bai toan, tap toan

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)) - ((thanh trung) OR (thanh tung)) cua tang duong va toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (nhieu tang)) - ((thanh trung) OR (thanh tung)) cua tang duong va toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (nhieu tang)) - ((thanh trung) OR (thanh tung)) cua tang duong va toan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (nhieu tang)) - ((thanh trung) OR (thanh tung)) cua tang duong va toan cau*.