Perhaps you should try some spelling variations:
nang xay » dang xay, nganh xay, nang xuan
xay phoi » cay phoi, cap phoi, tay hoi
su sach » so sach, vu sach
dua ban » dia ban, cua ban, qua ban
duc ban » duc tan, duc van, duc man
hieu ve » hieu va, hieu van
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam

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 y nang xay phoi. hieu ve cam ((duc ban) OR (dua ban)) nhanh ((tai cuc) or (tri cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xay phoi. hieu ve cam ((duc ban) OR (dua ban)) nhanh ((tai cuc) OR (tri cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xay phoi. hieu ve cam ((duc ban) OR (dua ban)) nhanh ((tai cuc) or (tri cua)) tre".
• Adding a wildcard symbol may retrieve word variants: su sach y nang xay phoi. hieu ve cam ((duc ban) OR (dua ban)) nhanh ((tai cuc) or (tri cua)) tre*.