Perhaps you should try some spelling variations:
ky dang » ky danh
hieu va » lieu va, hieu qua
hau loc » huu loc, phau hoc
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, lai cua, bai cua
hai cua » thai cua, dai cua, hoi cua
te cac » tu cac, ve cac, te cao
va hau » van hau, va chau, vat hau
loc va » hoc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te cac ((ky dang) or (ky nang)) xa hoi. hieu va hau loc va hanh ((vai cua) OR (hai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cac ((ky dang) OR (ky nang)) xa hoi. hieu va hau loc va hanh ((vai cua) OR (hai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cac ((ky dang) or (ky nang)) xa hoi. hieu va hau loc va hanh ((vai cua) OR (hai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te cac ((ky dang) or (ky nang)) xa hoi. hieu va hau loc va hanh ((vai cua) OR (hai cua)) tre*.