Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
hoc thieu » toc thieu, hoc hien
trang cua » tranh cua, trung cua, thang cua
tang cua » mang cua, hang cua, tang luan
cong san » cong tac
cong tan » cong tac, cong thanh, cong ty
toan tap » toan ban

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