Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi tap cho snippets" » "thi thap cho snippets", "thi tam cho snippets", "thi tac cho snippets", "thi tap co snippets", "thi cap cho snippets", "thi tap chi 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: (((("thi tap cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi tap cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi tap cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi tap cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.