Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
bien tinh » bi tinh, yen tinh, diep tinh
tranh cua » manh cua
doanh cua » doanh luan
hoc bien » hoc hien, hoc vien, hoa bien
dan phan » doan phan, van phan, dam phan
dan chan » dan gian, dan ca, van chat

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

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