Perhaps you should try some spelling variations:
nang hoa » nang hoat, hang hoa, nang hoc
hoa hoi » khoa hoi, hoa hoc, hoa doi
hieu va » lieu va, hieu qua
van vat » van chat, nhan vat
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, tuc va, luc va
van va » van van, ban va, van ha

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 hoa hoi. hieu va cam ((xuc va) or (tuc xa)) thanh ((van va) OR (van vat)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang hoa hoi. hieu va cam ((xuc va) OR (tuc xa)) thanh ((van va) OR (van vat)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang hoa hoi. hieu va cam ((xuc va) or (tuc xa)) thanh ((van va) OR (van vat)) triet*".