Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doi van toi snippets" » "doi van code snippets", "do van toi snippets", "doi va toi snippets", "doi ban toi snippets", "doi van tai snippets", "doi van thi snippets", "doi van toan snippets"
"python using java snippets" » "python using 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 java snippets") or ("doi van toi snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("doi van toi snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( doi van toi snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("doi van toi snippets"))) or ("locating bug core snippets"))*.