Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
ve pham » vi pham, v pham, ve phan
va tinh » may tinh
tao hoi » tao khoi, tao boi, thao hoc
lap cua » lai cua, tap cua, lam cua
tay hoi » tay ho, tay thai
hieu ve » hieu va, hieu van
ky sang » ky nang, ky dang, ky tang
san ky » sang ky, van ky, dan ky
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: toc san ky sang ((tao hoi) or (tay hoi)). hieu ve pham duc ((ban thanh) or (va tinh)) lap cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc san ky sang ((tao hoi) OR (tay hoi)). hieu ve pham duc ((ban thanh) OR (va tinh)) lap cua te.
• Adding a wildcard symbol may retrieve word variants: toc san ky sang ((tao hoi) or (tay hoi)). hieu ve pham duc ((ban thanh) or (va tinh)) lap cua te*.