Perhaps you should try some spelling variations:
duong cong » dung cong, luong cong, duong trong
tieu xanh » tieu danh, chieu xanh, dieu hanh
trinh cua » trinh luat, trinh quan, trinh luan
manh toan » thanh toan, anh tuan, tinh toan
tinh cua » sinh cua, tinh chat, tranh cua
van toan » van tuan, van tan, van thanh

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 ((tinh cua) or (trinh cua)) duong cong ((manh toan) or (van toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh ((tinh cua) OR (trinh cua)) duong cong ((manh toan) OR (van toan)) cao.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh ((tinh cua) or (trinh cua)) duong cong ((manh toan) or (van toan)) cao*.