Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cau tren » dau tren, ca tren, cau treo
ty hang » ly hang, ty xang, thi hang
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
cu tren » tu tren, 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: thu sach ((ty hang) or (ky nang)) co hoc. hieu ve cam xuc va hanh vi ((cau tren) OR (cu tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ty hang) OR (ky nang)) co hoc. hieu ve cam xuc va hanh vi ((cau tren) OR (cu tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((ty hang) or (ky nang)) co hoc. hieu ve cam xuc va hanh vi ((cau tren) OR (cu tren))".
• Adding a wildcard symbol may retrieve word variants: thu sach ((ty hang) or (ky nang)) co hoc. hieu ve cam xuc va hanh vi ((cau tren) OR (cu tren))*.