Perhaps you should try some spelling variations:
thien quan » trien quang, lien quan, thien quy
tranh chap » tranh cua, trinh chat
nhung cong » dung cong, thong cong, hang cong
dang thanh » dong thanh, dang hanh, hoang thanh
thien van » thi van
trang cap » trung cap, trong cap, trang cham
cong dang » cong dong, cong dan, cong dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((thien quan) or (thien van)) - hanh ((trang cap) OR (tranh chap)) nhung cong dang thanh san~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((thien quan) OR (thien van)) - hanh ((trang cap) OR (tranh chap)) nhung cong dang thanh san*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((thien quan) or (thien van)) - hanh ((trang cap) OR (tranh chap)) nhung cong dang thanh san*".