Perhaps you should try some spelling variations:
nhiet nang » nhiet dong, viet nang, nhieu tang
trinh luan » trinh quan, trinh han, trinh toan
hoc nhiet » hoc thiet, hoc nghien, hoc hien
trinh cua » tinh cua, trinh quan, trinh chat
dung cong » dung trong
cong van » cong vang, cong san, song van
van tan » van tuan, van ban, van tai
tan cao » toan cao, tao cao, tay cao

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: hoc nhiet nang - hanh ((((trinh cua) OR (trinh luan))) OR (trinh luat)) dung cong van tan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc nhiet nang - hanh ((((trinh cua) OR (trinh luan))) or (trinh luat)) dung cong van tan cao~".
• Adding a wildcard symbol may retrieve word variants: hoc nhiet nang - hanh ((((trinh cua) OR (trinh luan))) or (trinh luat)) dung cong van tan cao*.