Perhaps you should try some spelling variations:
van phat » va phat, van chat, dao phat
van phan » van phong, van thanh, luan phan
thanh va » thanh van, hanh va, thanh ha
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
duc ban » duc van, dua ban, duc man
cua tre » cua te, cuu tre, cua triet
va cua » va chua, via cua, ca cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky nang xa hoi. hieu ((van phat) or (van phan)) ((duc ban) OR (duc tan)) thanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang xa hoi. hieu ((van phat) OR (van phan)) ((duc ban) OR (duc tan)) thanh va cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky nang xa hoi. hieu ((van phat) or (van phan)) ((duc ban) OR (duc tan)) thanh va cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang xa hoi. hieu ((van phat) or (van phan)) ((duc ban) OR (duc tan)) thanh va cua tre*.