Perhaps you should try some spelling variations:
trung xuong » trung uong, trung duong, truong huong
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
xuong manh » duong manh, luong manh, xuong banh
luong cua » huong cua, luong quan, luong cuoc
manh toan » thanh toan, anh tuan, tinh toan
long cua » cong cua, dong cua, song cua
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 sach - nhanh ((long cua) or (luong cua)) trung xuong manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - nhanh ((long cua) OR (luong cua)) trung xuong manh toan cao.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - nhanh ((long cua) or (luong cua)) trung xuong manh toan cao*.