Perhaps you should try some spelling variations:
"data using java snippets" » "data using data snippets"
"dung sat chat snippets" » "duong sat chat snippets", "dung dat chat snippets", "dung sai chat snippets", "dung soat chat snippets", "dung suat chat snippets", "dung vat chat snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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: (((("dung sat chat snippets") or ("data using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung sat chat snippets") OR ("data using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung sat chat snippets ) or ( data using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung sat chat snippets") or ("data using java snippets"))) or ("locating bug code snippets"))*.