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