Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"don vi cac snippets" » "don voi cac snippets", "don vai cac snippets", "don va cac snippets", "dong vi cac snippets", "doan vi cac 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: (((("don vi 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: (((("don vi cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( don vi cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("don vi cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.