Perhaps you should try some spelling variations:
truong van » trong van, truong va, truong cao
dung cong » dung trong
theo hau » theo dau, theo mau, theo phap
hau sach » khau sach, cau sach, ham sach
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hau sach - thanh ((truong van) OR (truong dai)) dung cong dan than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo hau sach - thanh ((truong van) OR (truong dai)) dung cong dan than cau".
• Adding a wildcard symbol may retrieve word variants: theo hau sach - thanh ((truong van) OR (truong dai)) dung cong dan than cau*.