Perhaps you should try some spelling variations:
toan ty » toan ly, toan ky, toan tu
ty nang » ky nang, ty xang, ty hang
cao hoi » cau hoi, cao hoc, tao hoi
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
cham do » cham o, pham do, tham do
va danh » va dinh, va dan, va hanh
hai cua » thai cua, dai cua, lai cua
hoi cua » hoi chuc
co hoi » co hoc, co loi
do va » do van, so va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat toan ty nang ((cao hoi) or (co hoi)). hieu vu cham do va danh ((hai cua) or (hoi cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat toan ty nang ((cao hoi) OR (co hoi)). hieu vu cham do va danh ((hai cua) OR (hoi cua)) tre.
• Adding a wildcard symbol may retrieve word variants: thuat toan ty nang ((cao hoi) or (co hoi)). hieu vu cham do va danh ((hai cua) or (hoi cua)) tre*.