Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
sach tranh » canh tranh
sach tren » sach tien
tan duong » tuan duong, tang duong, van duong
duong may » duong ma, dung may, duong mat
thuc anh » thuc hanh, thuy anh, thu anh
anh hoa » anh khoa, danh hoa, hanh hoa
hoa tan » hoa dan, hoa van, hoa tin
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: su ((sach tren) OR (sach tranh)) hoc chuyen đe ky thuat: kien thuc anh hoa tan duong may tinh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach tren) OR (sach tranh)) hoc chuyen đe ky thuat: kien thuc anh hoa tan duong may tinh".
• Adding a wildcard symbol may retrieve word variants: su ((sach tren) OR (sach tranh)) hoc chuyen đe ky thuat: kien thuc anh hoa tan duong may tinh*.