Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"che mat cua snippets" » "he mat cua snippets", "cham mat cua snippets", "che hoat cua snippets", "che ma cua snippets", "che manh cua snippets", "che mang 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: (((("che mat 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: (((("che mat cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( che mat cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("che mat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.