Perhaps you should try some spelling variations:
duoc chat » doc chat, duoc pham, hoc chat
hieu duoc » hiem duoc, hieu thuoc, hieu luc
chat xuc » chat huu, cam xuc, chao xu
ban hanh » ban hang
va trien » va truyen, va thiet, va tuyen
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
ve va » ve van, te va, ke va

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

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