Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
tham xuc » tham nuoc, tham thuc, pham duc
hanh di » hanh de, hang di, danh di
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
vu nang » vuc nang, va nang, vu dang
xuc va » duc va, tuc va, luc va
v nang » va nang, van nang, voi nang
cua te » cua tu

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 ((v nang) or (vu nang)) xa hoi. hieu va tham xuc va ((hanh di) OR (hanh vi)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((v nang) OR (vu nang)) xa hoi. hieu va tham xuc va ((hanh di) OR (hanh vi)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((v nang) or (vu nang)) xa hoi. hieu va tham xuc va ((hanh di) OR (hanh vi)) cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach ((v nang) or (vu nang)) xa hoi. hieu va tham xuc va ((hanh di) OR (hanh vi)) cua te*.