Perhaps you should try some spelling variations:
thuyet danh » thuyet dan, thuyet anh, khuyet danh
hoc thuyet » hoc chuyen
trung thi » truong thi, trong thi, trung tri
trang tri » tran thi, quang tri
dung cong » dung trong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thuyet danh - thanh ((trung thi) or (trang tri)) dung cong dan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thuyet danh - thanh ((trung thi) OR (trang tri)) dung cong dan than ban.
• Adding a wildcard symbol may retrieve word variants: hoc thuyet danh - thanh ((trung thi) or (trang tri)) dung cong dan than ban*.