Perhaps you should try some spelling variations:
trien quang » tran quang, tuyen quang, dien quang
thien quan » lien quan, thien van, thien quy
lanh benh » kinh benh, benh benh, manh binh
chua dang » cua dang, chua dong, chua nang
dang cong » dung cong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((trien quang) or (thien quan)) - lanh benh chua dang cong dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((trien quang) OR (thien quan)) - lanh benh chua dang cong dan than tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((trien quang) or (thien quan)) - lanh benh chua dang cong dan than tap*.