Perhaps you should try some spelling variations:
thanh than » thanh thanh, thanh thang, thanh toan
chau tinh » cuu tinh, ha tinh, cua tinh
dung cong » dung trong
than cua » nhan cua, thai cua, ban cua
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
toan tai » toan tap, doanh tai, toan ban
toan cao » toan ban, toan tap
o chau » a chau, 3 chau, moc chau

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

• Performing a fuzzy search may retrieve terms with similar spellings: o chau tinh - thanh than cua dung cong dan ((toan tai) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: o chau tinh - thanh than cua dung cong dan ((toan tai) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: o chau tinh - thanh than cua dung cong dan ((toan tai) or (toan cao))*.