Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
kien thuoc » kien thuc, bien thuoc, trien thuoc
thuoc sach » hoc sach, nuoc sach, thuat sach
bach tren » sach tren, sach tien, bich tran
phan cong » thanh cong
tren hoc » truyen hoc, trung hoc, triet hoc
sach hoa » sach ha, sach hoi, bach hoa
hoa phan » hoa dan, co phan
may minh » may tinh, van minh, cao minh
mai minh » mai dinh, chi 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: vu bach tren hoc chuyen đe ky thuat: kien thuoc sach hoa phan cong ((may minh) or (mai minh))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu bach tren hoc chuyen đe ky thuat: kien thuoc sach hoa phan cong ((may minh) OR (mai minh)).
• Adding a wildcard symbol may retrieve word variants: vu bach tren hoc chuyen đe ky thuat: kien thuoc sach hoa phan cong ((may minh) or (mai minh))*.