Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luat cho hoc snippets" » "luat pho hoc snippets", "xuat chao hoc snippets", "luat bao hoc snippets", "luat co hoc snippets", "luat khoa hoc 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: (((("luat cho hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luat cho hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luat cho hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luat cho hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.