Perhaps you should try some spelling variations:
nhieu tang » hieu lang, nhiet nang
chieu sang » chieu sach, chieu xanh, hieu lang
phung dung » phuong dung, nhung dung, phuong duong
phung dang » phuong dung, phuong dong, phung quang
tranh van » tran van, trinh van, thanh van
manh toan » thanh toan, anh tuan, tinh toan
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: ho ((nhieu tang) or (chieu sang)) - canh tranh van ((phung dung) OR (phung dang)) manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((nhieu tang) OR (chieu sang)) - canh tranh van ((phung dung) OR (phung dang)) manh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((nhieu tang) or (chieu sang)) - canh tranh van ((phung dung) OR (phung dang)) manh toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((nhieu tang) or (chieu sang)) - canh tranh van ((phung dung) OR (phung dang)) manh toan cao*.