Perhaps you should try some spelling variations:
trinh tinh » trinh kinh, trinh tin, trinh dinh
doc trinh » doc tinh, doi trinh, hoc trinh
chua dong » cua dong, ha dong, huy dong
cua dang » cua cong, cua ban
cong tam » cong tac, cong tan, cong nam
tam than » ban than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc trinh tinh - canh tranh ((ung dung) or (((chua dong) or (cua dang)))) cong tam than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc trinh tinh - canh tranh ((ung dung) OR (((chua dong) OR (cua dang)))) cong tam than cao.
• Adding a wildcard symbol may retrieve word variants: doc trinh tinh - canh tranh ((ung dung) or (((chua dong) or (cua dang)))) cong tam than cao*.