Perhaps you should try some spelling variations:
trien thuoc » trien thuc, trien thuong, tin thuoc
hoc chuyen » khong chuyen
sach tren » sach tien, sach tranh
tren hoc » truyen hoc, trung hoc, triet hoc
dan dang » dang dang, dan dung, da dang
dang may » mang may, dang xay, dung may
may minh » may tinh, mai minh, van minh
su sach » so sach, vu sach
bach ha » bac ha, sach ha, bach khoa
bich ha » bich nga

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 hoc chuyen đe ky thuat: trien thuoc ((bach ha) or (bich ha)) dan dang may minh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tren hoc chuyen đe ky thuat: trien thuoc ((bach ha) OR (bich ha)) dan dang may minh.
• Adding a wildcard symbol may retrieve word variants: su sach tren hoc chuyen đe ky thuat: trien thuoc ((bach ha) or (bich ha)) dan dang may minh*.