Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"va chat cua snippets" » "va nhat cua snippets", "va chat va snippets", "va chat huu snippets", "van chat cua snippets", "va phat cua snippets", "va cham cua 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: (((("va chat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("va chat cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( va chat cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("va chat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.