Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
phan xuong » phan cong
thuc cach » thuoc sach, truoc cach, thuc hanh
cach khoa » bach khoa, cac khoa, cac khoan
phan cung » phan cong, phan ung, phan quang
kinh hoc » sinh hoc, hinh hoc, tinh hoc
may minh » may tinh, mai minh, van minh
tu sach » thu sach, su sach, te sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach kinh hoc chuyen đe ky thuat: kien thuc cach khoa ((phan cung) OR (phan xuong)) may minh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach kinh hoc chuyen đe ky thuat: kien thuc cach khoa ((phan cung) OR (phan xuong)) may minh".
• Adding a wildcard symbol may retrieve word variants: tu sach kinh hoc chuyen đe ky thuat: kien thuc cach khoa ((phan cung) OR (phan xuong)) may minh*.