Perhaps you should try some spelling variations:
"hoc dinh chuc snippets" » "hoc dinh chi snippets", "hoc dinh thuy snippets", "hoc dinh cuu snippets", "hoc sinh chuc snippets", "hoc kinh chuc snippets", "hoc danh chuc snippets"
"dung java java snippets" » "dung va java 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: (((("hoc dinh chuc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc dinh chuc snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc dinh chuc snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc dinh chuc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.