Perhaps you should try some spelling variations:
"h2o using java snippets" » "h2o using data snippets"
"dung chung co snippets" » "dung cong co snippets", "dung trung co snippets", "truong chung co snippets", "dung chung cho snippets", "dung chung cu snippets", "dung chong co 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: (((("h2o using java snippets") or ("dung chung co snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("h2o using java snippets") OR ("dung chung co snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( h2o using java snippets ) or ( dung chung co snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("h2o using java snippets") or ("dung chung co snippets"))) or ("locating bug code snippets"))*.