Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hieu van » thien van, lieu va, hieu ve
thuc day » thuc dan, thuc vat
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
dinh ke » dinh ket, dinh ve, dinh le
hieu va » lieu va, hieu qua
te sac » te sach, te cac, te san
xuc va » duc va, tuc va, luc va
sac ky » cac ky, sai ky
ke ve » ke va, ke he, de ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky tang xa hoi. ((hieu van) OR (hieu va)) cam ((xuc va) or (thuc day)) dinh ke ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky tang xa hoi. ((hieu van) OR (hieu va)) cam ((xuc va) OR (thuc day)) dinh ke ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky tang xa hoi. ((hieu van) OR (hieu va)) cam ((xuc va) or (thuc day)) dinh ke ve triet".
• Adding a wildcard symbol may retrieve word variants: te sac ky tang xa hoi. ((hieu van) OR (hieu va)) cam ((xuc va) or (thuc day)) dinh ke ve triet*.