Perhaps you should try some spelling variations:
ban tinh » ban thanh, quan tinh, ban hanh
tu sach » thu sach, su sach, te sach
tinh vi » trinh vi, tinh voi, tinh va
vu kham » vu khanh
ve chat » va chat, van chat
ky danh » ky anh
ky dang » ky nang
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((ky dang) or (ky danh)) xa hoi. hieu ((ve chat) or (vu kham)) cua ban tinh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky dang) OR (ky danh)) xa hoi. hieu ((ve chat) OR (vu kham)) cua ban tinh vi cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky dang) or (ky danh)) xa hoi. hieu ((ve chat) or (vu kham)) cua ban tinh vi cua te*.