Perhaps you should try some spelling variations:
nhieu tang » chieu sang, hieu lang, nhiet nang
hieu quang » thieu quang, hieu quan, hieu qua
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » dung cong, thong cong, hang cong
trung cua » truong cua, trung cap, dung cua
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((nhieu tang) or (hieu quang)) - hanh ((trung cua) OR (trung tuan)) nhung cong manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((nhieu tang) OR (hieu quang)) - hanh ((trung cua) OR (trung tuan)) nhung cong manh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((nhieu tang) or (hieu quang)) - hanh ((trung cua) OR (trung tuan)) nhung cong manh toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((nhieu tang) or (hieu quang)) - hanh ((trung cua) OR (trung tuan)) nhung cong manh toan cao*.