Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tieu xanh » tieu danh, chieu xanh, dieu hanh
tang van » dang van, hoang van, trong van
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban
tang va » trang va, thang va, tang vat

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - hanh ((tang va) OR (tang van)) nhung cong tac toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - hanh ((tang va) OR (tang van)) nhung cong tac toan tap".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh ((tang va) OR (tang van)) nhung cong tac toan tap*.