Perhaps you should try some spelling variations:
doi chiet » doi chi, doi viet, doi chinh
doi chieu » doc hieu, doi chi, ho chieu
tranh cua » doanh cua, manh cua
hach toan » thanh toan, manh toan
van cong » van dong, van phong, phan cong
tac toan » tap toan, tam toan, tich toan
cua van » cua ban, cua vat, cua dan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chiet) or (doi chieu)) tach - canh tranh cua van cong ((tac toan) OR (hach toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chiet) OR (doi chieu)) tach - canh tranh cua van cong ((tac toan) OR (hach toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chiet) or (doi chieu)) tach - canh tranh cua van cong ((tac toan) OR (hach toan)) cau".
• Adding a wildcard symbol may retrieve word variants: ((doi chiet) or (doi chieu)) tach - canh tranh cua van cong ((tac toan) OR (hach toan)) cau*.