Perhaps you should try some spelling variations:
ve triet » va trien, su triet
tang xa » trang xa, lang xa, tang ha
dinh ve » dinh ket, dinh van
tang ma » mang may, tang van
thuc va » thuc vat, thuc dan, thuc day
hieu ve » hieu va, hieu van
te sac » te sach, te cac, te san
xuc va » duc va, tuc va, luc va
sac ky » cac ky, sai ky
ve cac » va cac, vien cac
ve ve » de ve, va ve, ke 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) OR (tang ma)) hoi. hieu ve cac ((xuc va) or (thuc va)) dinh ve ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((tang xa) OR (tang ma)) hoi. hieu ve cac ((xuc 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 xa) OR (tang ma)) hoi. hieu ve cac ((xuc va) or (thuc va)) dinh ve ve triet".
• Adding a wildcard symbol may retrieve word variants: te sac ky ((tang xa) OR (tang ma)) hoi. hieu ve cac ((xuc va) or (thuc va)) dinh ve ve triet*.