Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tieu xanh » tieu danh, chieu xanh, dieu hanh
cua nhung » va nhung
tich toan » tinh toan, tich than, trinh toan
hanh ban » thanh ban, hang ban, hanh san
tap toan » tap quan, bai toan
tap doan » tap quan
ban cua » ban quan

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 ban cua nhung cong ((tich toan) or (((tap toan) or (tap doan)))) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh ban cua nhung cong ((tich toan) OR (((tap toan) OR (tap doan)))) cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh ban cua nhung cong ((tich toan) or (((tap toan) or (tap doan)))) cau*.