Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tung » thanh cong
tung cua » trung cua, tuong cua, dung cua
van cong » van dong, van phong, phan cong
cong tan » cong tac, cong san, cong thanh
toan tai » toan tap, doanh tai, toan ban
toan cao » toan ban, toan tap
cua van » cua ban, cua vat, cua dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sang - thanh tung cua van cong tan ((toan tai) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - thanh tung cua van cong tan ((toan tai) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - thanh tung cua van cong tan ((toan tai) or (toan cao))*.