Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"hoc thieu toan snippets" » "hoc hieu toan snippets", "hoc thien toan snippets", "hoc bieu toan snippets", "toc thieu toan snippets", "hoc hien toan snippets"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs code 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 java code snippets") or ("hoc thieu toan snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("hoc thieu toan snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( hoc thieu toan snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("hoc thieu toan snippets"))) or ("locating bug code snippets"))*.