Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"le trong do snippets" » "le trung do snippets", "ly trong do snippets", "le tang do snippets", "le trong doi snippets", "le trong dao snippets", "le trong co 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: (((("le trong do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("le trong do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( le trong do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("le trong do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.