Perhaps you should try some spelling variations:
thien van » thi van
toc sach » hoc sach, doc sach, thuoc sach
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
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

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