Perhaps you should try some spelling variations:
nang xay » dang xay, nganh xay, nang xuan
xay hoi » xa hoi, tay hoi, cay phoi
hieu va » lieu va, hieu qua
vai cua » hai cua, lai cua, bai cua
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang xay hoi. hieu va cam ((xuc va) OR (tuc va)) thanh ((vai cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang xay hoi. hieu va cam ((xuc va) OR (tuc va)) thanh ((vai cua) OR (dai cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang xay hoi. hieu va cam ((xuc va) OR (tuc va)) thanh ((vai cua) or (dai cua)) tre*".