Perhaps you should try some spelling variations:
nguon luc » nguon nuoc, nguon goc
va thanh » gia thanh, ban thanh, va tinh
chieu tu » chieu tro, lieu tu, chu tu
tu nguon » tu nguoi, tri nguon, tu nguyen
cua tre » cua te, cuu tre, cua triet
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
va hanh » van hanh, va danh, ban hanh
tu can » tu ban, tu cac, thu canh
can ky » van ky, dan ky, ban ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu can ky dang xa hoi. chieu tu nguon luc ((((va hanh) OR (va thanh))) or (gia dinh)) dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu can ky dang xa hoi. chieu tu nguon luc ((((va hanh) OR (va thanh))) OR (gia dinh)) dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu can ky dang xa hoi. chieu tu nguon luc ((((va hanh) OR (va thanh))) or (gia dinh)) dai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu can ky dang xa hoi. chieu tu nguon luc ((((va hanh) OR (va thanh))) or (gia dinh)) dai cua tre*.