Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
trung tac » trung tam, trong tac, trung tai
trong bai » trong ban, trong hai, trong tai
thong bai » thong tai, nhung bai, thong xay
ho chieu » theo chieu, hoc thieu, doi chieu
tac dung » sach dung, xay dung, tin dung
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 sach - thanh trung tac dung ((trong bai) OR (thong bai)) toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh trung tac dung ((trong bai) OR (thong bai)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh trung tac dung ((trong bai) OR (thong bai)) toan cao*.