Perhaps you should try some spelling variations:
tang mai » tang ma, tang tai, lang mai
ve triet » va trien, su triet
ky tang » ky nang, ky dang, kho tang
mai hoi » mai khoi, dai hoi, lai hoi
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
dinh ve » dinh ket, dinh van
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
xuc va » tuc va, luc va, xac va
ve ve » de ve, va ve, ke ve

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

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