Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trung » thanh trung, hanh trang, manh trung
cong thanh » dong thanh, cong trinh, truong thanh
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
cong tan » cong tac, cong san, cong ty
tran cau » tran chau, toan cau, tra cau
ran cau » van cau, ban 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 xanh - hanh trung cua thong ((cong tan) or (cong thanh)) ((tran cau) OR (ran cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh trung cua thong ((cong tan) OR (cong thanh)) ((tran cau) OR (ran cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh trung cua thong ((cong tan) or (cong thanh)) ((tran cau) OR (ran cau))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh trung cua thong ((cong tan) or (cong thanh)) ((tran cau) OR (ran cau))*.