Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
theo dieu » theo tieu, theo chieu, thuoc dieu
dieu danh » dieu hanh, tieu danh, dia danh
hanh hang » thanh hang, hang hang, hanh han
cua nhung » va nhung
manh toan » thanh toan, anh tuan, tinh toan
hang cua » mang cua, hang ca, huong 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 dieu danh - hanh hang cua nhung cong ((van toan) or (manh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo dieu danh - hanh hang cua nhung cong ((van toan) OR (manh toan)) cao*.