Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"truan don chuc snippets" » "truan doi chuc snippets", "thuat don chuc snippets", "tran doan chuc snippets", "truan cong chuc snippets", "truan dinh chuc snippets", "truan don thuoc 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 ("truan don chuc snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("truan don chuc snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( truan don chuc snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("truan don chuc snippets"))) or ("locating bug code snippets"))*.