Perhaps you should try some spelling variations:
tiem nang » tin nang, tich nang
hieu lang » chieu sang, hieu quang, nhieu tang
dang cong » dung cong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
phat cua » nhat cua, chat cua, mat cua
toan cao » toan ban, toan tap
hai cua » thai cua, dai cua, hoi cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((tiem nang) or (hieu lang)) - hanh ((phat cua) or (hai cua)) dang cong manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tiem nang) OR (hieu lang)) - hanh ((phat cua) OR (hai cua)) dang cong manh toan cao.
• Adding a wildcard symbol may retrieve word variants: theo ((tiem nang) or (hieu lang)) - hanh ((phat cua) or (hai cua)) dang cong manh toan cao*.