Perhaps you should try some spelling variations:
danh vai » danh sai, danh va, doanh van
su sach » so sach
vu sach » vu bach, vu khach
cao hoi » cau hoi, co hoi, cao hoc
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, va hanh
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
vai va » mai va, dai va, hai va
thiet » thieu

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) or (vu sach)) ky nang cao hoi. hieu ve cam xuc va danh vai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky nang cao hoi. hieu ve cam xuc va danh vai va thiet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ky nang cao hoi. hieu ve cam xuc va danh vai va thiet*.