Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hien xanh » hien hanh, hien nhanh, chieu xanh
canh tran » canh tranh, hanh trang, banh trang
dung cong » dung trong
doan phan » doanh phan, dan phan, doanh nhan
toan phan » thanh phan, toan ban, hoa 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 - canh tran van ((thong cong) or (dung cong)) ((doan phan) OR (toan phan)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - canh tran van ((thong cong) OR (dung cong)) ((doan phan) OR (toan phan)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - canh tran van ((thong cong) or (dung cong)) ((doan phan) OR (toan phan)) tu".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh tran van ((thong cong) or (dung cong)) ((doan phan) OR (toan phan)) tu*.