Perhaps you should try some spelling variations:
khoan thanh » hoan thanh, phan thanh, hoang thanh
hoc chuyen » khong chuyen
kien thuat » kiem thuat, thien thuat, chien thuat
thuat lanh » thuat lap, thuat san
khoa thanh » khoa than, hoa thanh, khong thanh
hoc sach » hoc sinh, hoc cac, hoc anh
dung hoc » dong hoc, dung thuoc, trung hoc
tung may » dung may, cung may, tung bay
may minh » may tinh, mai minh, van minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach dung hoc chuyen đe ky thuat: kien thuat lanh ((khoa thanh) OR (khoan thanh)) tung may minh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach dung hoc chuyen đe ky thuat: kien thuat lanh ((khoa thanh) OR (khoan thanh)) tung may minh".
• Adding a wildcard symbol may retrieve word variants: hoc sach dung hoc chuyen đe ky thuat: kien thuat lanh ((khoa thanh) OR (khoan thanh)) tung may minh*.