Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
tdanh thang » thanh thang, tranh hang, danh thanh
danh thang » danh thanh, dinh thang, nhanh thang
theo chieu » theo tieu, ho chieu, thi chieu
va phuong » va thuong, cac phuong
theo chu » cho chu, chao chu, theo yeu
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » 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: ((theo chieu) OR (theo chu)) sach - ((danh thang) or (tdanh thang)) va phuong cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo chu)) sach - ((danh thang) OR (tdanh thang)) va phuong cong tan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (theo chu)) sach - ((danh thang) or (tdanh thang)) va phuong cong tan toan cau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (theo chu)) sach - ((danh thang) or (tdanh thang)) va phuong cong tan toan cau*.