Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong cho vo snippets" » "dong cho code snippets", "dung cho vo snippets", "dong co vo snippets", "dong hoc vo snippets", "dong cho ro snippets", "dong cho va snippets", "dong cho ho 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: (((("dong cho vo snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong cho vo snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong cho vo snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong cho vo snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.