Perhaps you should try some spelling variations:
thanh trung » thanh tung
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
ho chieu » theo chieu, doi chieu, mot chieu
trung am » trung tam, trung nam, trung dam
cong san » cong tac
than cap » khan cap, thanh lap, thanh cac
khoan va » doan va, khoa ma, nhan va
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) OR (hoc thieu)) sach - thanh trung am dung cong san ((than cap) or (khoan va))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - thanh trung am dung cong san ((than cap) OR (khoan va)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) sach - thanh trung am dung cong san ((than cap) or (khoan va))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) sach - thanh trung am dung cong san ((than cap) or (khoan va))*.