Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc khao cuu snippets" » "luc khac cuu snippets", "luan khao cuu snippets", "luc nhat cuu snippets", "luc cham cuu snippets", "luc chao chu snippets", "luc kho 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: (((("luc khao cuu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luc khao cuu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc khao cuu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc khao cuu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.