Perhaps you should try some spelling variations:
phuong doan » phuong loan, phuong hoang, huong dan
hanh trung » thanh trung, hanh trang, manh trung
phuong dan » phuong danh, huong dan, phuong lan
hieu manh » chieu xanh, hieu nganh, dieu hanh
hieu lang » chieu sang, hieu quang, nhieu tang
trung tan » trung tuan, trung tran, trung tang
tan dung » tran dung, tin dung, van dung
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 ((hieu manh) or (hieu lang)) - hanh trung tan dung ((phuong dan) OR (phuong doan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (hieu lang)) - hanh trung tan dung ((phuong dan) OR (phuong doan)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu manh) or (hieu lang)) - hanh trung tan dung ((phuong dan) OR (phuong doan)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (hieu lang)) - hanh trung tan dung ((phuong dan) OR (phuong doan)) toan cao*.