Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phoi hoc mot snippets" » "hoi hoc mot snippets", "phoi thuoc mot snippets", "hoa hoc mot snippets", "phoi hoc moi 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: (((("phoi hoc mot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phoi hoc mot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phoi hoc mot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phoi hoc mot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.