Perhaps you should try some spelling variations:
"hoang dung co snippets" » "hoang tung co snippets", "hoang vuong co snippets", "thong dung co snippets", "hoang dung cong snippets", "hoang dung cua snippets", "hoang dung von snippets"
"hoang dung cho snippets" » "hoang tung cho snippets", "hoang vuong cho snippets", "thong dung cho snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 co snippets") OR ("hoang dung cho snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoang dung co snippets") OR ("hoang dung cho snippets"))) OR ("locating bug code snippets")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"hoang dung co snippets\") OR (\"hoang dung cho snippets\"))) or (\"locating bug code snippets\"))".
• Removing quotes may allow a broader search: (((( hoang dung co snippets ) OR ( hoang dung cho snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoang dung co snippets") OR ("hoang dung cho snippets"))) or ("locating bug code snippets"))*.