Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
nang cua » mang cua, hang cua, tang cua
nang dua » nang du, nang suat, nang quan
cong dan » cong san, cong tan, huong dan
dan chay » dan chan, san chay, toan chay
chay cao » cay cao, chat cao, nha 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 hieu lang - ganh ((nang cua) or (nang dua)) thuong cong dan chay cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - ganh ((nang cua) OR (nang dua)) thuong cong dan chay cao.
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - ganh ((nang cua) or (nang dua)) thuong cong dan chay cao*.