Perhaps you should try some spelling variations:
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
thuc va » thuc vat, thuc dan, thuc day
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
ke su » ve su, ky su, ki su

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

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