Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran hue voi snippets" » "tran huu voi snippets", "tran hung voi snippets", "tran thuy voi snippets", "tran quen voi snippets", "tran chua voi snippets", "tran hieu voi 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 hue voi 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 hue voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran hue voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran hue voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.