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