Perhaps you should try some spelling variations:
quoc quan » qua quan, luc quan, hoc quan
nho quan » nuoc quan, ngoc quan, co quan
nha quan » phap quan, hai quan, qua quan
restrict » strict
restricted » stricted
restricts » stricts
district » distinct, strict

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((nho quan) or (nha quan))) or (quoc quan)) (((restrict OR restricted ) or district ) or restricts )~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((nho quan) OR (nha quan))) OR (quoc quan)) (((restrict OR restricted ) OR district ) OR restricts )*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((nho quan) or (nha quan))) or (quoc quan)) (((restrict OR restricted ) or district ) or restricts )*".