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