Perhaps you should try some spelling variations:
thuyet tinh » thuyet trinh, thuyet kinh, thuyet dinh
hoc thuyet » hoc chuyen
thanh dung » thanh duong, thanh tung, thanh hung
dung quang » dang quang, dung quan, luong quang
quang dung » quang trung, ung dung, cuong dung
trong tan » trong quan, trong ca, cong tan
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: hoc thuyet tinh - thanh dung quang dung ((trong tan) OR (trong cac)) toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thuyet tinh - thanh dung quang dung ((trong tan) OR (trong cac)) toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc thuyet tinh - thanh dung quang dung ((trong tan) OR (trong cac)) toan cao*.