Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nham hat doi snippets" » "nham phat doi snippets", "nham mat doi snippets", "pham nhat doi snippets", "nham hoat doi snippets", "nham thay doi snippets", "nham hang doi 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: (((("nham hat doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nham hat doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nham hat doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nham hat doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.