Perhaps you should try some spelling variations:
phuong dong » phuong dung, phuong hoang, chuong duong
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
va phuong » va thuong, cac phuong
anh tang » anh dang, anh nang, anh sang
anh bang » anh hoang, anh quang, tinh bang
dong hoc » dong co, dong luc
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: theo chieu xanh - ((anh tang) or (anh bang)) va phuong dong hoc ((toan tap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - ((anh tang) OR (anh bang)) va phuong dong hoc ((toan tap) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - ((anh tang) or (anh bang)) va phuong dong hoc ((toan tap) or (toan ban))*.