Perhaps you should try some spelling variations:
ban tinh » ban thanh, quan tinh, ban hanh
tu sach » thu sach, su sach, te sach
ky dang » ky danh
ve cham » va cham, ve chat, ve chim
tinh vi » trinh vi, tinh voi, tinh va
vu cham » va cham, vu kham, tu cham
cuc ban » cua ban, cac ban, cuu ban
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 nang)) xa hoi. hieu ((ve cham) or (vu cham)) cuc ban tinh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky dang) OR (ky nang)) xa hoi. hieu ((ve cham) OR (vu cham)) cuc ban tinh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky dang) OR (ky nang)) xa hoi. hieu ((ve cham) or (vu cham)) cuc ban tinh vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky dang) OR (ky nang)) xa hoi. hieu ((ve cham) or (vu cham)) cuc ban tinh vi cua te*.