Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tieu xanh » tieu danh, chieu xanh, dieu hanh
thang va » hang va, trang va, thanh va
thong va » thong cua, truong va, thong qua
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - hanh ((thang va) OR (thong va)) nhung cong tac toan cao~".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh ((thang va) OR (thong va)) nhung cong tac toan cao*.