Perhaps you should try some spelling variations:
nhung chong » nhung cong, nhung phong, nhung phuong
tien trinh » tien thinh, bien tinh, tien thanh
theo tien » theo tieu, thuc tien, theo tcvn
trung cua » truong cua, trung tuan, trung cap
chong bai » cuong bai, thong bai, chong lai
tung cua » tuong cua, dung cua, tang cua
bai toan » bai tap
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 tien trinh - thanh ((tung cua) or (trung cua)) nhung chong bai toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tien trinh - thanh ((tung cua) OR (trung cua)) nhung chong bai toan cao.
• Adding a wildcard symbol may retrieve word variants: theo tien trinh - thanh ((tung cua) or (trung cua)) nhung chong bai toan cao*.