Perhaps you should try some spelling variations:
kieu tinh » lieu tinh, trieu tinh, diep tinh
chau tinh » cuu tinh, ha tinh, cua tinh
nhanh bac » nhanh ha, nhanh va
cua dung » cua dang, cua dong, qua dung
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan ban » van ban
bac cua » ban cua, tac cua, bai cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((kieu tinh) or (chau tinh)) - nhanh bac cua dung ((cong dan) OR (cong san)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((kieu tinh) OR (chau tinh)) - nhanh bac cua dung ((cong dan) OR (cong san)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((kieu tinh) or (chau tinh)) - nhanh bac cua dung ((cong dan) OR (cong san)) toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((kieu tinh) or (chau tinh)) - nhanh bac cua dung ((cong dan) OR (cong san)) toan ban*.