Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hoang dan so snippets" » "hoang dan code snippets", "hoang dang so snippets", "hoang van so snippets", "hoang san so snippets", "hoang dan soc snippets", "hoang dan su snippets", "hoang dan mo snippets"
"python using data snippets" » "python using java snippets", "python using sat snippets", "python missing data 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: (((("python using data snippets") or ("hoang dan so snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using data snippets") OR ("hoang dan so snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using data snippets ) or ( hoang dan so snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using data snippets") or ("hoang dan so snippets"))) or ("locating bug core snippets"))*.