Perhaps you should try some spelling variations:
chiet tach » chieu sach
thanh tung » thanh cong
hoc chiet » hoc thiet, hoc nhiet, hoc hien
nang cong » nang song, dang cong, bang cong
tay thuat » tam thuat, thu thuat, my thuat
tung va » trung va, tuong va, dung va
va nang » van nang, da nang, cam nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chiet tach - thanh tung va nang cong ((tay thuat) OR (ky thuat)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chiet tach - thanh tung va nang cong ((tay thuat) OR (ky thuat)) cao".
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - thanh tung va nang cong ((tay thuat) OR (ky thuat)) cao*.