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