Perhaps you should try some spelling variations:
kien thuoc » kien thuc, bien thuoc, trien thuoc
hoc chuyen » khong chuyen
thuoc lanh » thuoc thanh, thuat lanh, thuoc ban
sach tien » sach tren, sach thieu
phan dang » phan dau, phan cong, nhan dan
tien hoc » tin hoc, tien hoa, dien hoc
dao phan » dao phat, dam phan, do phan
dang xay » dang van, van xay
vu sach » vu bach, su sach, vu khach

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach tien hoc chuyen đe ky thuat: kien thuoc lanh dao phan dang xay (minh or trinh)~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach tien hoc chuyen đe ky thuat: kien thuoc lanh dao phan dang xay (minh OR trinh).
• Adding a wildcard symbol may retrieve word variants: vu sach tien hoc chuyen đe ky thuat: kien thuoc lanh dao phan dang xay (minh or trinh)*.