Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
nhung cong » dung cong, thong cong, hang cong
hach toan » thanh toan, manh toan
sang cua » mang cua, song cua, hang cua
tac toan » tap toan, tam toan, tich toan
ban cua » ban quan

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

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