Perhaps you should try some spelling variations:
tien thanh » tien thinh, tran thanh, den thanh
chieu tinh » trieu tinh, lieu tinh, chau tinh
hang cong » dang cong, hang nong, bang cong
trinh va » trinh van, trinh vat, trinh vi
trinh ve » trinh he, trinh vi, trinh viet
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((tien thanh) or (chieu tinh)) - hanh ((trinh va) or (trinh ve)) hang cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((tien thanh) OR (chieu tinh)) - hanh ((trinh va) OR (trinh ve)) hang cong dan than cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((tien thanh) or (chieu tinh)) - hanh ((trinh va) or (trinh ve)) hang cong dan than cau*.