Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu dang » thien dang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
trung van » truong van, trong van, trung va
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan tap » toan ban
han tap » han tai, nhan tai, nhan tao

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu dang - thanh trung van dong ((cong dan) or (cong san)) ((han tap) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu dang - thanh trung van dong ((cong dan) OR (cong san)) ((han tap) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu dang - thanh trung van dong ((cong dan) or (cong san)) ((han tap) or (toan tap))*.