Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, nhieu tang
nang duong » nang dong, tang duong, giang duong
nang luong » nang song
hieu lang » hieu quang, nhieu tang, hieu van
trung cam » trung tam, trung cap, trung nam
manh toan » thanh toan, anh tuan, tinh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) or (hieu lang)) - thanh trung cam ((nang duong) OR (nang luong)) manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (hieu lang)) - thanh trung cam ((nang duong) OR (nang luong)) manh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (hieu lang)) - thanh trung cam ((nang duong) OR (nang luong)) manh toan ban".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (hieu lang)) - thanh trung cam ((nang duong) OR (nang luong)) manh toan ban*.