Perhaps you should try some spelling variations:
thien thanh » tien thanh, hien hanh, chien tranh
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
dung cong » dung trong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man

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

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