Perhaps you should try some spelling variations:
thep danh » tiep danh, thien danh, hop danh
xanh tam » xanh lam, hanh tam, thanh tam
xanh tai » hanh tai, anh tai, vanh tai
canh tam » canh tac, canh tay, hanh tam
benh hoc » sinh hoc
danh nam » dan nam, dinh nam, dang nam
nam tinh » nam dinh, lam tinh, nam linh
cach. » cac., sach.

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( thep ((((xanh tam) OR (xanh tai))) OR (canh tam)) benh hoc. ) OR ( thep danh nam tinh cach. ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( thep ((((xanh tam) OR (xanh tai))) or (canh tam)) benh hoc. ) or ( thep danh nam tinh cach. ))~".
• Adding a wildcard symbol may retrieve word variants: (( thep ((((xanh tam) OR (xanh tai))) or (canh tam)) benh hoc. ) or ( thep danh nam tinh cach. ))*.