Perhaps you should try some spelling variations:
trinh tinh » trinh kinh, trinh tin, trinh dinh
doi trinh » doc trinh, doi tinh, dong trinh
cua dong » chua dong, cua cong, cua nong
cua dang » cua cong, cua ban
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi trinh tinh - canh tranh ((ung dung) OR (((cua dong) OR (cua dang)))) cong tac toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi trinh tinh - canh tranh ((ung dung) OR (((cua dong) OR (cua dang)))) cong tac toan cao".
• Adding a wildcard symbol may retrieve word variants: doi trinh tinh - canh tranh ((ung dung) OR (((cua dong) OR (cua dang)))) cong tac toan cao*.