Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
hieu ve » hieu va, hieu van
luc va » duc va, tuc va
ve cam » ve cham, ve cac, va cam
loc va » hoc va
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ky nang x hoi. hieu ve cam ((luc va) OR (loc va)) hanh vi ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky nang x hoi. hieu ve cam ((luc va) OR (loc va)) hanh vi ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ky nang x hoi. hieu ve cam ((luc va) OR (loc va)) hanh vi ((cua tre) or (cuu tre))*".