Perhaps you should try some spelling variations:
"hang dich cham snippets" » "hoang dinh cham snippets", "van dich cham snippets", "ban dich cham snippets", "hang dich kham snippets", "hang dinh chau snippets", "hang dich chi 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: (((("hang dich cham snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hang dich cham snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang dich cham snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang dich cham snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.