Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hien xanh » hien hanh, hien nhanh, chieu xanh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
dan than » dan chan, ban than, van than
van tuan » van ban, anh tuan
van quan » van ban

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 tranh cua nhung cong ((dan than) or (((van tuan) OR (van quan)))) cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - canh tranh cua nhung cong ((dan than) OR (((van tuan) OR (van quan)))) cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - canh tranh cua nhung cong ((dan than) or (((van tuan) OR (van quan)))) cap".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh tranh cua nhung cong ((dan than) or (((van tuan) OR (van quan)))) cap*.