Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"dong trang do snippets" » "dong trong do snippets", "hong trang do snippets", "dong trung do snippets", "dong trang o snippets", "dong tang do snippets", "dong trang de snippets"
"data using java snippets" » "data using data 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: (((("dong trang do snippets") or ("data using java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong trang do snippets") OR ("data using java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( dong trang do snippets ) or ( data using java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong trang do snippets") or ("data using java snippets"))) or ("locating bugs code snippets"))*.