Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pha van loc snippets" » "pham van loc snippets", "phan van loc snippets", "phap van loc snippets", "pha van hoc snippets", "pha van loi snippets", "pha van ngoc 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: (((("pha van loc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pha van loc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pha van loc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pha van loc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.