Perhaps you should try some spelling variations:
van nhan » van phan, van thanh, danh nhan
nhan thi » nhanh thi, nhan tai, phan thi
tu sach » thu sach, su sach, te sach
hoc cac » hoc cao
nang xa » nang x, lang xa, nang ma
va tham » van tham, va cham, va thanh
va chat » van chat, va phat, cao chat
luc van » luoc van, luu van, duc van
thi cuc » tai cuc
cuc tre » duc tre, cua tre, cuu tre

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (hoc cac)) ky nang xa hoi. lieu ((va tham) or (va chat)) luc van nhan thi cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (hoc cac)) ky nang xa hoi. lieu ((va tham) OR (va chat)) luc van nhan thi cuc tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (hoc cac)) ky nang xa hoi. lieu ((va tham) or (va chat)) luc van nhan thi cuc tre*.