Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kho nhan cua snippets" » "kho khan cua snippets", "cho nhan cua snippets", "khi nhan cua snippets", "kho nhat cua snippets", "kho nhan luc snippets", "kho nhan su 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: (((("kho nhan 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: (((("kho nhan cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kho nhan cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kho nhan cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.