Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
cua trong » cua truong, cua trung, qua trong
cong can » cong tan, cong dan, cong cau
cong san » cong tac
chai tu » cai tu, choi tu, chay tu
han tu » phan tu, hanh tu, ban tu

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 trong ((cong can) OR (cong san)) ((chai tu) or (han tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - hanh trinh cua trong ((cong can) OR (cong san)) ((chai tu) OR (han tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thieu xanh - hanh trinh cua trong ((cong can) OR (cong san)) ((chai tu) or (han tu))".
• Adding a wildcard symbol may retrieve word variants: toc thieu xanh - hanh trinh cua trong ((cong can) OR (cong san)) ((chai tu) or (han tu))*.