Perhaps you should try some spelling variations:
phuong dong » phuong dung, phuong hoang, chuong duong
cuu phuong » cac phuong, thu phuong
chu xanh » chu manh, chieu xanh, chua xang
chu bang » thu bang, chuc nang, chu quang
anh tang » anh bang, anh dang, anh nang
tang cuu » tang cua, tang cuoc, thang cua
tai toan » tap toan, tai tuan, tam toan
bai toan » bai tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu xanh) or (chu bang)) - anh tang cuu phuong dong ((tai toan) OR (bai toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu xanh) OR (chu bang)) - anh tang cuu phuong dong ((tai toan) OR (bai toan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu xanh) or (chu bang)) - anh tang cuu phuong dong ((tai toan) OR (bai toan)) ban".
• Adding a wildcard symbol may retrieve word variants: theo ((chu xanh) or (chu bang)) - anh tang cuu phuong dong ((tai toan) OR (bai toan)) ban*.