Perhaps you should try some spelling variations:
quang lang » quan lang, quang dang, quang hoang
trien hoat » tien hoa
hieu soat » hieu suat, hieu hoat, hieu luat
dong pham » cong pham, dong pha, dong phan
tien soat » thien hoat, kiem soat, tien hoa
lang van » dang van, tang van, hoang van
van hieu » cao hieu
tin dong » tien dong, tin dung, tin don
tinh » trinh, dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tinh quang lang van hieu soat ) or ( tin dong pham van ((tien soat) or (trien hoat)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh quang lang van hieu soat ) OR ( tin dong pham van ((tien soat) OR (trien hoat)) )).
• Adding a wildcard symbol may retrieve word variants: (( tinh quang lang van hieu soat ) or ( tin dong pham van ((tien soat) or (trien hoat)) ))*.