Perhaps you should try some spelling variations:
"data using java snippets" » "data using data snippets"
"dong hanh cac snippets" » "dong thanh cac snippets", "dang hanh cac snippets", "hong hanh cac snippets", "dong hang cac snippets", "dong hanh cat snippets", "dong nhanh cay 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: (((("dong hanh cac snippets") or ("data using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong hanh cac snippets") OR ("data using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong hanh cac snippets ) or ( data using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong hanh cac snippets") or ("data using java snippets"))) or ("locating bug code snippets"))*.