Perhaps you should try some spelling variations:
phung thanh » phuong thanh, phong thanh, nhung thanh
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
thuc phung » thuc chung, thuc nhung, thu phuong
thanh toan » thanh hoa, thanh san, tinh toan
trang dan » trang doan, trong dan, trang van
tang dan » tang van, tung dan, tang luan
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: hoc ((chieu xanh) OR (chieu sang)) - hanh ((trang dan) or (tang dan)) thuc phung thanh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sang)) - hanh ((trang dan) OR (tang dan)) thuc phung thanh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) OR (chieu sang)) - hanh ((trang dan) or (tang dan)) thuc phung thanh toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) OR (chieu sang)) - hanh ((trang dan) or (tang dan)) thuc phung thanh toan ban*.