Perhaps you should try some spelling variations:
dang phuong » bang phuong, dung phuong, dang thuong
hanh trung » thanh trung, hanh trang, manh trung
dan phuong » doan phuong, van phuong, lan phuong
hieu manh » chieu xanh, hieu nganh, dieu hanh
hieu lang » chieu sang, hieu quang, nhieu tang
trung cua » truong cua, trung tuan, trung cap
manh toan » thanh toan, anh tuan, tinh toan
toan tap » toan 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 manh) or (hieu lang)) - hanh trung cua ((dang phuong) OR (dan phuong)) manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (hieu lang)) - hanh trung cua ((dang phuong) OR (dan phuong)) manh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu manh) or (hieu lang)) - hanh trung cua ((dang phuong) OR (dan phuong)) manh toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (hieu lang)) - hanh trung cua ((dang phuong) OR (dan phuong)) manh toan tap*.