Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho cong se snippets" » "cao cong se snippets", "cua cong se snippets", "cac cong se snippets", "cho cong so snippets", "cho con se snippets", "cho cong de 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 cong se 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 cong se snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho cong se snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho cong se snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.