Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"hoang le do snippets" » "hoang de do snippets", "hong le do snippets", "hoang lam do snippets", "hoang ke do snippets", "hoang le co snippets", "hoang le d snippets"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs code 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: (((("using java code snippets") or ("hoang le do snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("hoang le do snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( hoang le do snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("hoang le do snippets"))) or ("locating bug code snippets"))*.