Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu sao cac snippets" » "thu bao cac snippets", "thu lao cac snippets", "thu san cac snippets", "thu sat cac snippets", "thu tao 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: (((("thu sao 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: (((("thu sao cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu sao cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu sao cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.