Perhaps you should try some spelling variations:
chau tinh » cuu tinh, ha tinh, cua tinh
luan nang » luan van, van nang, luan san
nang cong » nang song, dang cong, bang cong
anh dung » anh dong, anh huong, sach dung
cong dan » cong san, cong tan, huong dan
toan cao » toan ban
toan tap » toan ban
ho chau » ha chau, ho chu, o chau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chau tinh - anh dung luan nang cong dan ((toan cao) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chau tinh - anh dung luan nang cong dan ((toan cao) OR (toan tap))*".