Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhat va chu snippets" » "nhan va chu snippets", "chat va chu snippets", "nhat ve chu snippets", "nhat va che snippets", "nhat va cau snippets", "nhat va chi 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 chu 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 chu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhat va chu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhat va chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.