Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
nang cua » mang cua, hang cua, tang cua
nang dua » nang du, nang suat, nang quan
cong dan » cong san, cong tan, huong dan
gian cao » gian cac, gian co, giai cao

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 - ganh ((nang cua) or (nang dua)) thuong cong dan gian cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - ganh ((nang cua) OR (nang dua)) thuong cong dan gian cao.
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - ganh ((nang cua) or (nang dua)) thuong cong dan gian cao*.