Perhaps you should try some spelling variations:
nhiet nang » nhiet dong, viet nang, nhieu tang
hieu lang » chieu sang, hieu quang, nhieu tang
dung cong » dung trong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
mang cua » manh cua, ban cua, cong cua
dung cua » dung luan, dung cho
toan ban » van ban

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) or (nhiet nang)) - hanh ((mang cua) OR (dung cua)) dung cong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu lang) OR (nhiet nang)) - hanh ((mang cua) OR (dung cua)) dung cong manh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu lang) or (nhiet nang)) - hanh ((mang cua) OR (dung cua)) dung cong manh toan ban".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu lang) or (nhiet nang)) - hanh ((mang cua) OR (dung cua)) dung cong manh toan ban*.