Perhaps you should try some spelling variations:
so sanh » do sanh
sanh ky » hanh ky, sang ky, nganh ky
cao hoi » cau hoi, co hoi, cao hoc
hieu ve » hieu va, hieu van
xuc cac » xuc tac, xuc cam, duc cac
tuc cac » tu cac, tich cac
ve cac » va cac, vien cac
va cua » va chua, via cua, ca cua
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh ky nang cao hoi. hieu ve cac ((xuc cac) OR (tuc cac)) doan va cua tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh ky nang cao hoi. hieu ve cac ((xuc cac) OR (tuc cac)) doan va cua tu".
• Adding a wildcard symbol may retrieve word variants: so sanh ky nang cao hoi. hieu ve cac ((xuc cac) OR (tuc cac)) doan va cua tu*.