Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh mang » nhanh mang, hanh trang, nhanh lang
hach toan » thanh toan
manh toan » thanh toan, anh tuan, tinh toan
tac toan » tap toan, tam toan, tich toan
mang va » mang vua, hang va, bang va

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