Perhaps you should try some spelling variations:
quang tran » quang tuan, quang trung, quang thanh
phung cong » nhung cong, phong cong, nhung chong
anh quang » anh xquang, anh quan, nhanh quang
hung cong » nhung cong, hung cuong, dung cong
do chinh » hoc chinh, mo hinh, do dinh
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chi) or (do chinh)) sach - anh quang tran ((hung cong) or (phung cong)) tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chi) OR (do chinh)) sach - anh quang tran ((hung cong) OR (phung cong)) tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ((doi chi) or (do chinh)) sach - anh quang tran ((hung cong) or (phung cong)) tac toan cau*.