Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh tang » hanh trang, anh tang, hanh mang
cong san » cong tac
tran ban » tranh ban, tran bai, tran tan
tran van » luan van
toan ban » van ban
tang va » trang va, tang van, thang va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu tinh - hanh tang va nhung cong san ((((tran ban) OR (tran van))) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu tinh - hanh tang va nhung cong san ((((tran ban) OR (tran van))) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: hoc chieu tinh - hanh tang va nhung cong san ((((tran ban) OR (tran van))) or (toan ban))*.