Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trong thi di snippets" » "trong thoi di snippets", "trong thu di snippets", "trong tho di snippets", "trong thi dai snippets", "trong thi diu snippets", "trong thi ai 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: (((("trong thi di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trong thi di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong thi di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong thi di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.