Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
cong thanh » dong thanh, cong trinh, truong thanh
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
cong tan » cong tac, cong san, cong ty
than cau » phan cau, than cap, thanh chau
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: toc thieu xanh - hanh trinh cua nhung ((cong tan) OR (cong thanh)) ((than cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - hanh trinh cua nhung ((cong tan) OR (cong thanh)) ((than cau) OR (toan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thieu xanh - hanh trinh cua nhung ((cong tan) OR (cong thanh)) ((than cau) or (toan cau))".
• Adding a wildcard symbol may retrieve word variants: toc thieu xanh - hanh trinh cua nhung ((cong tan) OR (cong thanh)) ((than cau) or (toan cau))*.