Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chon van he snippets" » "chon va he snippets", "thong van he snippets", "phong van he snippets", "chon van hoe snippets", "chon van hue snippets", "chon 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: (((("chon 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: (((("chon van he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chon van he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chon van he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.