Perhaps you should try some spelling variations:
duong truong » duong trong, truong trung, tang truong
duong luong » duong vuong, dung luong, thuong luong
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
manh toan » thanh toan, anh tuan, tinh toan
anh tang » anh bang, anh dang, anh nang
toan ban » van ban
tang va » trang va, tang van, thang va

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

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