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