Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh luat, trinh han
trinh cua » tinh cua, trinh luat, trinh luan
dung cong » dung trong
theo yeu » theo tieu, thiet yeu, theo chu
cong van » cong vang, cong san, song van
van chat » cao chat
chat nan » chat ban, chat ran, chan nan
cho chu » cho thue

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo yeu) or (cho chu)) xanh - hanh ((trinh cua) OR (trinh quan)) dung cong van chat nan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo yeu) OR (cho chu)) xanh - hanh ((trinh cua) OR (trinh quan)) dung cong van chat nan.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo yeu) or (cho chu)) xanh - hanh ((trinh cua) OR (trinh quan)) dung cong van chat nan".
• Adding a wildcard symbol may retrieve word variants: ((theo yeu) or (cho chu)) xanh - hanh ((trinh cua) OR (trinh quan)) dung cong van chat nan*.