Perhaps you should try some spelling variations:
trong chuan » thong chuan, trong chan, trong thuan
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
manh trong » manh truong, anh trong, manh trung
chuan xang » chua xang, chuan trang, chua nang
thanh toan » thanh hoa, thanh san, tinh toan
xang cong » dang cong, bang cong, hang cong
manh toan » anh tuan, tinh toan

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

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