Perhaps you should try some spelling variations:
"tran quang code snippets" » "tran quang de snippets", "tran quang code slippers"
"dong cho code snippets" » "dung cho code snippets", "dong co code snippets", "dong hoc code snippets", "dong cho cong snippets", "dong cfd code snippets", "dong cho con snippets", "dong cho code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: (((("tran quang code snippets") or ("dong cho code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran quang code snippets") OR ("dong cho code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran quang code snippets ) or ( dong cho code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran quang code snippets") or ("dong cho code snippets"))) or ("locating bug code snippets"))*.