Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
cong thanh » dong thanh, cong trinh, truong thanh
hoc thieu » toc thieu, hoc hien
hanh tang » hanh trang, anh tang, hanh mang
tang cua » mang cua, hang cua, tang luan
cua tong » cua cong, cua dong, cua nong
cong tan » cong tac, cong san, cong ty
than cao » toan cao, thai cao, than cap

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 tang cua tong ((cong tan) OR (cong thanh)) than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tinh - hanh tang cua tong ((cong tan) OR (cong thanh)) than cao".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - hanh tang cua tong ((cong tan) OR (cong thanh)) than cao*.