Perhaps you should try some spelling variations:
thien chanh » thien thanh, thien chinh, hien hanh
nhung cong » dung cong, thong cong, hang cong
cmanh cua » canh cua, doanh cua, mang cua
tien anh » tieng anh, tien manh, dien anh
manh cua » doanh cua, ban cua
cong san » cong tac
san tao » sang tao, san bao, san tay
tao cao » bao cao, toan cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien chanh) or (tien anh)) - hanh ((cmanh cua) or (manh cua)) nhung cong san tao cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien chanh) OR (tien anh)) - hanh ((cmanh cua) OR (manh cua)) nhung cong san tao cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien chanh) or (tien anh)) - hanh ((cmanh cua) or (manh cua)) nhung cong san tao cao*.