Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
cong cong » cong dong, trong cong, dung cong
tran van » luan van
cong dan » cong san, cong tan, huong dan
dan khan » dan khanh, dan chan, dan than
thi lan » thi hanh, thi nang, thi lien
khan ap » khan cap, han ap, khan dam

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu tinh - thanh ((thi lan) OR (tran van)) cong cong dan khan ap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu tinh - thanh ((thi lan) OR (tran van)) cong cong dan khan ap*".