Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
nam thuc » nam thuoc, am thuc, nam thu
thuc van » thuc vat, thuc dan, thuc va
ky tang » ky nang, kho tang, ky trong
ky dang » ky nang, ky danh
hieu le » hieu he, hieu ly, tieu le
van anh » van thanh, tuan anh, van minh
hieu ve » hieu va, hieu van
di cua » dai cua, doi cua, de cua
anh di » danh di, xanh di, anh d
su sac » su sach, su cac, su xac

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 tang) OR (ky dang)) xa hoi. ((hieu le) or (hieu ve)) nam thuc van anh di cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ((ky tang) OR (ky dang)) xa hoi. ((hieu le) OR (hieu ve)) nam thuc van anh di cua viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ((ky tang) OR (ky dang)) xa hoi. ((hieu le) or (hieu ve)) nam thuc van anh di cua viet*".