Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
hanh khoa » hang khoa, anh khoa, hanh hoa
khoa phan » hoa phan, khoa than, khoa phau
thu sach » thuat sach, thuoc sach, thu hoach
kinh hoc » sinh hoc, hinh hoc, tinh hoc
phan ung » phan xuong, phan cong
tan minh » tran minh, tuan minh, van minh
tu sach » su sach, te sach, tu cach
ung tan » cung tan, hung tan, ung tac

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

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