Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
hoc thieu » toc thieu, hoc hien
chinh cua » chinh sua, hinh cua, chinh luan
chinh ca » chinh ta, chinh va, chinh tai
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan cau » toan cao, toan ban, toan tap

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