Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"luong cac vat snippets" » "luong cuoc vat snippets", "luong va vat snippets", "luong tai vat snippets", "luong cac van snippets", "luong cac hat snippets", "luong cac chat snippets"
"locating bug code slippers" » "locating bung code slippers", "locating bugs code slippers"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java code snippets") or ("luong cac vat snippets"))) or ("locating bug code slippers"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("luong cac vat snippets"))) OR ("locating bug code slippers")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( luong cac vat snippets ))) or ( locating bug code slippers )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("luong cac vat snippets"))) or ("locating bug code slippers"))*.