Perhaps you should try some spelling variations:
thieu tach » thien hach, chiet tach, chieu sach
hoc thieu » toc thieu, hoc hien
banh rang » banh trang, hanh trang, ban hang
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
rang va » trang va, hang va, bang va
va dang » van dang, va nang, va lang
ca cau » cua cau, cac cau, can cau

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 tach - banh rang va dang ((cong dan) or (cong san)) ca cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tach - banh rang va dang ((cong dan) OR (cong san)) ca cau*.