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 san » cong tac
toan cau » toan cao, toan ban, toan tap
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 san) or (huong dan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((kieu tinh) OR (chau tinh)) - nhanh bac cua dung ((cong san) OR (huong dan)) toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((kieu tinh) or (chau tinh)) - nhanh bac cua dung ((cong san) or (huong dan)) toan cau*.