Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh tran » hanh trang, thanh tran, hanh tram
dung cong » dung trong
tien anh » tieng anh, tien manh, dien anh
tran van » luan van
van dung » van dong, xay dung, tin dung
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: hoc ((((thieu xanh) or (tien anh))) or (chieu tinh)) - hanh tran van dung cong dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((thieu xanh) OR (tien anh))) OR (chieu tinh)) - hanh tran van dung cong dan than tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((((thieu xanh) or (tien anh))) or (chieu tinh)) - hanh tran van dung cong dan than tap*.