Perhaps you should try some spelling variations:
thien thanh » thi thanh, hien hanh, chien tranh
tien thanh » tien thinh, tran thanh, den thanh
chinh va » chinh ta, chinh tai, hanh va
va trong » va truong, va thong, va tuong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: (hoan or soan) ((tien thanh) or (thien thanh)) - hanh chinh va trong cong dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (hoan OR soan) ((tien thanh) OR (thien thanh)) - hanh chinh va trong cong dan than tap.
• Adding a wildcard symbol may retrieve word variants: (hoan or soan) ((tien thanh) or (thien thanh)) - hanh chinh va trong cong dan than tap*.