Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
sach tien » sach tren, sach thieu
khoa than » khoa luan, hoa thai, hoa tan
than xung » phan xuong, thanh tung, thanh hung
tien hoc » tin hoc, tien hoa, dien hoc
thuc cac » thuc cach, tuc cac, thac cac
phuc cac » phuc cam, phuc ca, phuc cham
xung may » dung may, cung may, mang may
vu sach » vu bach, su sach, vu khach
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 tien hoc chuyen đe ky thuat: kien ((thuc cac) or (phuc cac)) khoa than xung may tinh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach tien hoc chuyen đe ky thuat: kien ((thuc cac) OR (phuc cac)) khoa than xung may tinh.
• Adding a wildcard symbol may retrieve word variants: vu sach tien hoc chuyen đe ky thuat: kien ((thuc cac) or (phuc cac)) khoa than xung may tinh*.