Perhaps you should try some spelling variations:
"hoang dung core snippets" » "hoang tung core snippets", "hoang vuong core snippets", "thong dung core snippets", "hoang dung cong snippets", "hoang dung co snippets", "hoang dung coc snippets"
"hoang dung con snippets" » "hoang tung con snippets", "hoang vuong con snippets", "thong dung con snippets", "hoang dung cong snippets", "hoang dung von snippets", "hoang dung co snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("hoang dung core snippets") OR ("hoang dung con snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoang dung core snippets") OR ("hoang dung con snippets"))) OR ("locating bug code snippets")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"hoang dung core snippets\") OR (\"hoang dung con snippets\"))) or (\"locating bug code snippets\"))".
• Removing quotes may allow a broader search: (((( hoang dung core snippets ) OR ( hoang dung con snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoang dung core snippets") OR ("hoang dung con snippets"))) or ("locating bug code snippets"))*.