Perhaps you should try some spelling variations:
hang chua » hang cua, zhang chuan, phong chua
van nang » van quang, van ban, van dong
kham duc » pham duc, kham cuoc, pham duy
va triet » va thiet, va trien, ve triet
vu sach » vu bach, su sach, vu khach
hieu vu » hieu va, hieu ve, hieu su
vu kham » vu khanh
va hang » van hang, va nang, va lang
chua va » chuc va, chua may, chuan ha

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) or (van nang)) xa hoi. hieu vu kham duc va hang chua va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((ky nang) OR (van nang)) xa hoi. hieu vu kham duc va hang chua va triet.
• Adding a wildcard symbol may retrieve word variants: vu sach ((ky nang) or (van nang)) xa hoi. hieu vu kham duc va hang chua va triet*.