Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
cua viet » ca viet, hoa viet, cua vat
cham tuc » pham thuc, tham thuc, cham soc
nang xa » nang x, lang xa, nang ma
te sach » toc sach
hieu va » lieu va, hieu qua
va dinh » van dinh, va kinh, va tinh
dinh ba » dinh gia, dinh van, dinh lam
tu cach » tu cac
ba cua » ban cua, bai cua, bao cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (te sach)) ky nang xa hoi. hieu va ((cham tuc) OR (nham thuc)) va dinh ba cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (te sach)) ky nang xa hoi. hieu va ((cham tuc) OR (nham thuc)) va dinh ba cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (te sach)) ky nang xa hoi. hieu va ((cham tuc) OR (nham thuc)) va dinh ba cua viet".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (te sach)) ky nang xa hoi. hieu va ((cham tuc) OR (nham thuc)) va dinh ba cua viet*.