Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
phuong manh » phuong anh, phung manh, phuong danh
thanh sinh » thanh binh, thanh tinh, thanh vinh
doi chieu » doc hieu, doi chi, ho chieu
manh toan » thanh toan, anh tuan, tinh toan
theo chu » theo chieu, cho chu, chao chu
toan ban » van ban
sinh va » sinh vat, tinh va, dinh van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (theo chu)) tinh - thanh sinh va nhung phuong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (theo chu)) tinh - thanh sinh va nhung phuong manh toan ban*.