Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu xanh » chieu xanh, hieu manh, hieu nganh
tranh cua » manh cua
doanh cua » doanh luan
doc hieu » toc thieu, hoc thieu, hoc hien
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - canh ((tranh cua) OR (doanh cua)) nhung cong tan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - canh ((tranh cua) OR (doanh cua)) nhung cong tan toan cao".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - canh ((tranh cua) OR (doanh cua)) nhung cong tan toan cao*.