Perhaps you should try some spelling variations:
nhieu tang » chieu sang, hieu lang, nhiet nang
nhung cong » dung cong, thong cong, hang cong
trinh vat » trinh van, trinh han, trinh tai
he nhieu » hop nhieu, phu nhieu, he dieu
cong san » cong tac
san ban » sang ban, van ban, can ban
ban can » ban dan, ban hang, ban hanh
luat » luan, xuat

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

• If you are trying to use Boolean operators, they must be ALL CAPS: he nhieu tang - canh ((((trinh vat) OR (trinh luat))) OR (sinh vat)) nhung cong san ban can~.
• Adding a wildcard symbol may retrieve word variants: he nhieu tang - canh ((((trinh vat) or (trinh luat))) or (sinh vat)) nhung cong san ban can*.