Perhaps you should try some spelling variations:
khoan khao » khoanh khac, hoan hao, khoa kham
hoc chuyen » khong chuyen
khao dung » kha dung, thao duong, khao huong
tien hoc » tin hoc, tien hoa, dien hoc
thuc cac » thuc cach, tuc cac, phuc cac
dung may » dung va, dung tai, mang may
vu sach » vu bach, vu khach
su sach » so sach
tinh » trinh, dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) OR (su sach)) tien hoc chuyen đe ky thuat: kien thuc cac khoan khao dung may tinh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (su sach)) tien hoc chuyen đe ky thuat: kien thuc cac khoan khao dung may tinh".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) OR (su sach)) tien hoc chuyen đe ky thuat: kien thuc cac khoan khao dung may tinh*.