Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trong thi co snippets" » "trong thoi co snippets", "trong thu co snippets", "trong tho co snippets", "trong thi mo snippets", "trong thi cu snippets", "trong thi bo 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 co 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 co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong thi co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong thi co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.