Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chung van he snippets" » "phung van he snippets", "nhung van he snippets", "chung han he snippets", "chung van hoe snippets", "chung van hue snippets", "chung van de 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: (((("chung van he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chung van he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chung van he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chung van he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.