Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong cao cong snippets" » "dong cao code snippets", "duong cao cong snippets", "dong co cong snippets", "dong cho cong snippets", "dong cac cong snippets", "dong cao dang snippets", "dong cua cong snippets"
"hang java java snippets" » "hang va 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: (((("hang java java snippets") or ("dong cao cong snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hang java java snippets") OR ("dong cao cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hang java java snippets ) or ( dong cao cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang java java snippets") or ("dong cao cong snippets"))) or ("locating bug core snippets"))*.