Perhaps you should try some spelling variations:
sach tri » sach tai, sach tren, sach truc
tri nang » thi nang, tra nang, tri bang
hieu van » hieu va, thien van, lieu va
te sach » toc sach
nang xa » nang x, lang xa, nang ma
van cac » van hac, van cau, van bac
xuc va » tuc va, luc va, xac va
vi qua » vi quan, va qua, vi lua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach tri nang xa hoi. hieu van cac ((xuc va) or (duc va)) hanh vi qua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tri nang xa hoi. hieu van cac ((xuc va) OR (duc va)) hanh vi qua su.
• Adding a wildcard symbol may retrieve word variants: te sach tri nang xa hoi. hieu van cac ((xuc va) or (duc va)) hanh vi qua su*.