Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh tang » hanh trang, anh tang, hanh mang
dung cong » dung trong
tang cua » mang cua, hang cua, tang luan
ty toan » tap toan, huy toan, tam toan
ly toan » le toan, ly hoan, ly tran

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 cua ((nhung cong) or (dung cong)) ((ty toan) OR (ly toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh tang cua ((nhung cong) OR (dung cong)) ((ty toan) OR (ly toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - hanh tang cua ((nhung cong) or (dung cong)) ((ty toan) OR (ly toan)) cau".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh tang cua ((nhung cong) or (dung cong)) ((ty toan) OR (ly toan)) cau*.