Perhaps you should try some spelling variations:
phuong dong » phuong dung, phuong hoang, chuong duong
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
anh thong » anh thuong, anh trong, anh huong
va phuong » va thuong, cac phuong
thong va » thong cua, truong va, thong qua
dong tac » cong tac, dong tai, dong bac
toan ban » van ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sang)) - anh thong va phuong dong tac ((toan tap) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (chieu sang)) - anh thong va phuong dong tac ((toan tap) OR (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chieu sang)) - anh thong va phuong dong tac ((toan tap) OR (toan ban))*.