Perhaps you should try some spelling variations:
phuong tinh » phuong trinh, phuong binh, khuong tinh
tdanh trung » thanh trung, thanh tung, dang trung
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
danh trung » dang trung, dinh trung, manh trung
nhu phuong » thu phuong, nhung phuong, thi phuong
toan ban » van ban
cua nhu » cua nhua, cua chu, cua nha

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - ((danh trung) OR (tdanh trung)) cua nhu phuong tinh ((toan tap) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - ((danh trung) or (tdanh trung)) cua nhu phuong tinh ((toan tap) OR (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - ((danh trung) or (tdanh trung)) cua nhu phuong tinh ((toan tap) OR (toan ban))*.