Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sang va cua snippets" » "hang va cua snippets", "song va cua snippets", "sang ma cua snippets", "sang va chua snippets", "sang via cua snippets", "sang ca 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: (((("sang va 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: (((("sang va cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sang va cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sang va cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.