Perhaps you should try some spelling variations:
"van hoi lang man." » "van hoa lang man." (Expand Search), "van o lang man." (Expand Search), "van thoi lang man." (Expand Search), "van hoc lang man." (Expand Search)
"dan thi lang man." » "dan thai lang man." (Expand Search), "dan thi lan man." (Expand Search), "dan thi hang man." (Expand Search), "dang thi lang man." (Expand Search), "tran thi lang man." (Expand Search), "phan thi lang man." (Expand Search)
"doan thi lang man." » "doan thai lang man." (Expand Search), "doan thi lan man." (Expand Search), "doan thi hang man." (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: (("van hoi lang man.") OR ((("dan thi lang man.") OR ("doan thi lang man."))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"van hoi lang man.\") OR (((\"dan thi lang man.\") OR (\"doan thi lang man.\"))))".
• Removing quotes may allow a broader search: (( van hoi lang man. ) OR ((( dan thi lang man. ) OR ( doan thi lang man. )))).
• Adding a wildcard symbol may retrieve word variants: (("van hoi lang man.") OR ((("dan thi lang man.") OR ("doan thi lang man."))))*.