Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » trong cong, tong cong, thong thong
dang quang » dung quang, nang quan, dang hung
quang chan » quang thanh, quang khanh, quang khang
cong dang » cong dong, cong dan, cong dung
trung ha » trung hoc, trung tam, trung cap
bang khi » ban khi, dang khoi, dang khai

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 sach - hanh ((trung ha) or (bang khi)) thong cong dang quang chan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh ((trung ha) OR (bang khi)) thong cong dang quang chan.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh ((trung ha) or (bang khi)) thong cong dang quang chan*.