Perhaps you should try some spelling variations:
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va

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 lang xa hoi. hieu ve cam ((xuc va) or (thuc vat)) hanh vi ((cuu tre) OR (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang xa hoi. hieu ve cam ((xuc va) OR (thuc vat)) hanh vi ((cuu tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky lang xa hoi. hieu ve cam ((xuc va) or (thuc vat)) hanh vi ((cuu tre) OR (cua tre))".
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. hieu ve cam ((xuc va) or (thuc vat)) hanh vi ((cuu tre) OR (cua tre))*.