Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong van do snippets" » "dong van code snippets", "duong van do snippets", "dang van do snippets", "dong von do snippets", "dong van dao snippets", "dong van de snippets", "dong van du 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 van do 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 van do snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong van do snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong van do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.