Perhaps you should try some spelling variations:
"data using java snippets" » "data using data snippets"
"dung may cua snippets" » "dung va cua snippets", "dung tai cua snippets", "mang may cua snippets", "dung day cua snippets", "dung may bua snippets", "dung may sua 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: (((("dung may cua snippets") or ("data using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung may cua snippets") OR ("data using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung may cua snippets ) or ( data using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung may cua snippets") or ("data using java snippets"))) or ("locating bug code snippets"))*.