Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngoc my cua snippets" » "nuoc my cua snippets", "ngoc ly cua snippets", "ngoc sy cua snippets", "ngoc ky cua snippets", "ngoc ma cua 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 my cua 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 my cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngoc my cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngoc my cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.