Perhaps you should try some spelling variations:
"quan tran giang." » "quan tuan giang." (Expand Search), "quan thanh giang." (Expand Search), "quan trong giang." (Expand Search), "quan trang giang." (Expand Search), "quan trac giang." (Expand Search), "quan tren giang." (Expand Search)
"quan than giang." » "quan thanh giang." (Expand Search), "quan tuan giang." (Expand Search), "quan han giang." (Expand Search), "quang than giang." (Expand Search), "quan nhan giang." (Expand Search)
"tran van giang." » "tran va giang." (Expand Search), "tran tuan giang." (Expand Search), "tran dan gian." (Expand Search), "luan van giang." (Expand Search), "san van giang." (Expand Search)

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 van giang.") OR ((("quan tran giang.") OR ("quan than giang."))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"tran van giang.\") OR (((\"quan tran giang.\") OR (\"quan than giang.\"))))".
• Removing quotes may allow a broader search: (( tran van giang. ) OR ((( quan tran giang. ) OR ( quan than giang. )))).
• Adding a wildcard symbol may retrieve word variants: (("tran van giang.") OR ((("quan tran giang.") OR ("quan than giang."))))*.