Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong huy dot snippets" » "dong huy code snippets", "duong huu dot snippets", "dong luc dot snippets", "dong hoc dot snippets", "dong duy dot snippets", "dong huy mot snippets", "dong huy dong 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 ("dong huy dot snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("dong huy dot snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( dong huy dot snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("dong huy dot snippets"))) or ("locating bug core snippets"))*.