Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
van cham » van tham, va cham, van pham
van chat » cao chat
te sach » toc sach
nang xa » nang x, lang xa, nang ma
han tai » hang tai, nhan tai, van tai
xuc va » duc va, tuc va, luc va
va han » va phan, van han, va hanh
tai va » thai va, mai va, tri va
thiet » thieu

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) or (te sach)) ky nang xa hoi. hieu ((van cham) or (van chat)) xuc va han tai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (te sach)) ky nang xa hoi. hieu ((van cham) OR (van chat)) xuc va han tai va thiet.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (te sach)) ky nang xa hoi. hieu ((van cham) or (van chat)) xuc va han tai va thiet*.