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