Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
kinh van » dinh van, vinh van, binh van
cau treo » cau theo, cau tren, cau triet
ty hang » ly hang, ty xang, thi hang
va kinh » va tinh, qua kinh
ty nang » ky nang, ty xang, ly nang
van cau » van dau, van hau, van chat
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va
ve cam » ve cham, va cam, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ((ty nang) or (ty hang)) xa hoi. hieu ((ve cam) OR (ve cac)) xuc va kinh van cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((ty nang) OR (ty hang)) xa hoi. hieu ((ve cam) OR (ve cac)) xuc va kinh van cau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((ty nang) or (ty hang)) xa hoi. hieu ((ve cam) OR (ve cac)) xuc va kinh van cau treo".
• Adding a wildcard symbol may retrieve word variants: toc sach ((ty nang) or (ty hang)) xa hoi. hieu ((ve cam) OR (ve cac)) xuc va kinh van cau treo*.