Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
sinh ky » sinh ly, sinh y, kinh ky
cao hoc » co hoc, cho hoc, chat hoc
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
va hanh » van hanh, va thanh, va danh
dau cua » dai cua, cau cua, dan cua
day cua » dai cua
va dau » va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sinh ky nang cao hoc. hieu vu cham xuc ((va hanh) or (va dau)) ((dau cua) OR (day cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sinh ky nang cao hoc. hieu vu cham xuc ((va hanh) OR (va dau)) ((dau cua) OR (day cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sinh ky nang cao hoc. hieu vu cham xuc ((va hanh) or (va dau)) ((dau cua) OR (day cua)) tre".
• Adding a wildcard symbol may retrieve word variants: hoc sinh ky nang cao hoc. hieu vu cham xuc ((va hanh) or (va dau)) ((dau cua) OR (day cua)) tre*.