Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » thanh trung, hanh trang, manh trung
thang cong » thanh cong, thang long, thong cong
trung dai » truong dai, truong dao, trung tam
dai thang » danh thang, tai thanh, dai han
cong van » cong vang, cong san, song van
tan cau » toan cau, van cau, tao cau
tan ca » tan cua, tang ca, dan ca

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien hach) or (chieu sach)) - hanh trung dai thang cong van ((tan cau) OR (tan ca))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien hach) OR (chieu sach)) - hanh trung dai thang cong van ((tan cau) OR (tan ca)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien hach) or (chieu sach)) - hanh trung dai thang cong van ((tan cau) OR (tan ca))".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien hach) or (chieu sach)) - hanh trung dai thang cong van ((tan cau) OR (tan ca))*.