Perhaps you should try some spelling variations:
"qua ca dong snippets" » "qua ca code snippets", "qua cao dong snippets", "qua cau dong snippets", "qua cua dong snippets", "qua cac dong snippets", "qua cai dong snippets"
"locating bug core snippets" » "locating bug code 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 ("qua ca dong snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"python using java snippets\") OR (\"qua ca dong snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( python using java snippets ) OR ( qua ca dong snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") OR ("qua ca dong snippets"))) OR ("locating bug core snippets"))*.