Perhaps you should try some spelling variations:
"qua cao cong snippets" » "qua cao code snippets", "qua cac cong snippets", "qua cao dang snippets", "qua cua cong snippets", "qua ca cong snippets", "qua cai cong 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 cao cong 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 cao cong snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( python using java snippets ) OR ( qua cao cong snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") OR ("qua cao cong snippets"))) OR ("locating bug core snippets"))*.