Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"using data core snippets" » "using java core snippets", "using sat core snippets", "missing data core snippets"
"van nhan java snippets" » "van nhan va snippets", "van phan java snippets", "van thanh java snippets", "danh nhan java 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 data core snippets") or ("van nhan java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using data core snippets") OR ("van nhan java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( using data core snippets ) or ( van nhan java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using data core snippets") or ("van nhan java snippets"))) or ("locating bugs code snippets"))*.