Perhaps you should try some spelling variations:
trung cong » truong cong, trong cong, trung uong
theo chieu » theo tieu, ho chieu, theo chu
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
cua trung » cua truong, xuan trung, cua nhung
theo yeu » theo tieu, thiet yeu, theo chu
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
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) or (theo yeu)) sach - ((hanh tang) or (hanh mang)) cua trung cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo yeu)) sach - ((hanh tang) OR (hanh mang)) cua trung cong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo yeu)) sach - ((hanh tang) or (hanh mang)) cua trung cong tac toan cao*.