Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
sach thi » sach thu, sach tai, sach thieu
thi nang » thi cong, ki nang, thi hanh
hang doi » hang di, hang loi, huong doi
hanh doi » thanh doi, hanh noi, hanh moi
va cham » va chat, va tham
xuc va » duc va, tuc va, luc va
va cam » va cac, va cao, va cai
cua te » cua tu
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: toc sach thi nang x hoi. hieu ((va cam) OR (va cham)) xuc va ((hanh doi) or (hang doi)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach thi nang x hoi. hieu ((va cam) OR (va cham)) xuc va ((hanh doi) OR (hang doi)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach thi nang x hoi. hieu ((va cam) OR (va cham)) xuc va ((hanh doi) or (hang doi)) cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach thi nang x hoi. hieu ((va cam) OR (va cham)) xuc va ((hanh doi) or (hang doi)) cua te*.