Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
chiet tach » chieu sach
dung manh » duong manh, dung danh, hung manh
manh toan » thanh toan, anh tuan, tinh toan
trang va » hang va
tran van » luan van
toan tap » toan ban

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 (chiet tach)) - hanh ((trang va) OR (tran van)) ung dung manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chiet tach)) - hanh ((trang va) OR (tran van)) ung dung manh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (chiet tach)) - hanh ((trang va) OR (tran van)) ung dung manh toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chiet tach)) - hanh ((trang va) OR (tran van)) ung dung manh toan tap*.