Perhaps you should try some spelling variations:
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
hieu vu » hieu va, hieu ve, hieu su
vu chat » va chat, ve chat, du chat
sach 2 » sach y
2 nang » v nang
x hoi » xa hoi, o hoi, x ho
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 2 nang x hoi. hieu vu 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 2 nang x hoi. hieu vu chat xuc ((van ban) OR (ban hanh)) ve va trien.
• Adding a wildcard symbol may retrieve word variants: su sach 2 nang x hoi. hieu vu chat xuc ((van ban) or (ban hanh)) ve va trien*.