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