Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
truong va » truong dai, truong cao, truong dao
ho chieu » theo chieu, hoc thieu, doi chieu
trung va » trang va, trung ha, trung tam
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cau » 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: ((ho chieu) or (toc thieu)) sach - thanh ((trung va) or (truong va)) thong cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (toc thieu)) sach - thanh ((trung va) OR (truong va)) thong cong san toan cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (toc thieu)) sach - thanh ((trung va) or (truong va)) thong cong san toan cau*.