Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac hiem he snippets" » "cac diem he snippets", "cac chien he snippets", "cac chieu he snippets", "cac hiem xe snippets", "cac hieu he snippets", "cac thien 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: (((("cac hiem 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: (((("cac hiem he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac hiem he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac hiem he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.