Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chieu xanh » chieu sach, chieu sang, chieu tinh
hien xanh » hien hanh, hien nhanh, hien khanh
canh tran » canh tranh, hanh trang, banh trang
dung cong » dung trong
doan phan » doanh phan, toan phan, dan phan
tran van » luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien xanh) OR (chieu xanh)) - canh tran van ((thong cong) or (dung cong)) doan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (chieu xanh)) - canh tran van ((thong cong) OR (dung cong)) doan phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (chieu xanh)) - canh tran van ((thong cong) or (dung cong)) doan phan tu".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (chieu xanh)) - canh tran van ((thong cong) or (dung cong)) doan phan tu*.