Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thien danh » thien anh, thien dang, thien chanh
nhung cong » dung cong, thong cong, hang cong
quang van » quan van, quang uan, quang va
quang ban » quang binh, quang tuan, quang tran
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien thanh) or (thien danh)) - nhanh ((quang van) OR (quang ban)) nhung cong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien thanh) OR (thien danh)) - nhanh ((quang van) OR (quang ban)) nhung cong dan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien thanh) or (thien danh)) - nhanh ((quang van) OR (quang ban)) nhung cong dan toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien thanh) or (thien danh)) - nhanh ((quang van) OR (quang ban)) nhung cong dan toan tap*.