Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
trang vap » trang vai, trang van, tran van
trang va » tran van, hang va
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - hanh ((trang vap) OR (trang va)) nhung cong dan ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tinh - hanh ((trang vap) OR (trang va)) nhung cong dan ((toan cau) or (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - hanh ((trang vap) OR (trang va)) nhung cong dan ((toan cau) or (toan tap))*.