Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te 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
xuc van » duc van, luc van, vuc van
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky lang xa hoi. hieu ve cam ((xuc van) or (duc tan)) hanh vi ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky lang xa hoi. hieu ve cam ((xuc van) OR (duc tan)) hanh vi ((cuu tre) OR (cua tre)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky lang xa hoi. hieu ve cam ((xuc van) or (duc tan)) hanh vi ((cuu tre) or (cua tre))*.