Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lieu ha dong snippets" » "lieu nha dong snippets", "lieu va dong snippets", "liem ha dong snippets", "lieu hoat dong snippets", "lieu van dong 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: (((("lieu ha dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lieu ha dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lieu ha dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lieu ha dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.