Perhaps you should try some spelling variations:
nhuong cong » luong cong, duong cong, thong cong
chieu tinh » trieu tinh, lieu tinh, chau tinh
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
canh tran » canh tranh, hanh trang, banh trang
tran van » luan van
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hieu manh) or (chieu tinh)) - canh tran van ((nhuong cong) OR (nhung cong)) dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu manh) OR (chieu tinh)) - canh tran van ((nhuong cong) OR (nhung cong)) dan chan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((hieu manh) or (chieu tinh)) - canh tran van ((nhuong cong) OR (nhung cong)) dan chan cau".
• Adding a wildcard symbol may retrieve word variants: doi ((hieu manh) or (chieu tinh)) - canh tran van ((nhuong cong) OR (nhung cong)) dan chan cau*.