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