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