Perhaps you should try some spelling variations:
trinh thuat » trinh luat, trinh thiet, trinh thuc
hanh trinh » canh tranh, hanh chinh
thuat tong » thuat trong, thuat song, thuat cong
theo phap » thi phap
phap sinh » phau sinh, phai sinh, phap tinh
tong dong » trong dong, tuong dong, thong dong
bang phan » bang nhan, bang thanh, quang phan
nang phan » nang phat, nang thanh, nang quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo phap sinh - hanh trinh thuat tong dong ((bang phan) or (nang phan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo phap sinh - hanh trinh thuat tong dong ((bang phan) OR (nang phan)) cau.
• Adding a wildcard symbol may retrieve word variants: theo phap sinh - hanh trinh thuat tong dong ((bang phan) or (nang phan)) cau*.