Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
thieu xanh » chieu xanh, hieu manh, thien anh
trinh vat » trinh van, trinh luat, sinh vat
cong dan » cong san, cong tan, huong dan
toan tap » toan ban
toan cao » toan ban
tinh ca » tinh cao, tinh cua, tinh va

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 - thanh ((tinh ca) or (trinh vat)) thuong cong dan ((toan tap) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - thanh ((tinh ca) OR (trinh vat)) thuong cong dan ((toan tap) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: toc thieu xanh - thanh ((tinh ca) or (trinh vat)) thuong cong dan ((toan tap) or (toan cao))*.