Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngoc cuu cac snippets" » "ngoc chu cac snippets", "ngoc huu cac snippets", "ngoc chau cac snippets", "ngoc cua cac snippets", "ngoc cuu dac snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("ngoc cuu cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ngoc cuu cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngoc cuu cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngoc cuu cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.