Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
trong san » trong cac, cong san, dong san
khoan cam » khoa cam, khoan va, phan cam
ho chieu » theo chieu, hoc thieu, doi chieu
trung am » trung tam, trung nam, trung dam
than cap » khan cap, thanh lap, thanh cac
am dung » am duong, lam dung, ap dung

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 sach - thanh trung am dung trong san ((than cap) or (khoan cam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh trung am dung trong san ((than cap) OR (khoan cam)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh trung am dung trong san ((than cap) or (khoan cam))*.