Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong van do snippets" » "cong van code snippets", "cong vang do snippets", "cong san do snippets", "song van do snippets", "cong van dao snippets", "cong van de snippets", "cong van du snippets"
"python using java snippets" » "python using data snippets"

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 ("cong van do snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"python using java snippets\") OR (\"cong van do snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( python using java snippets ) OR ( cong van do snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") OR ("cong van do snippets"))) OR ("locating bug core snippets"))*.