Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
truong cao » truong dai
thong cong » trong cong, tong cong, thong thong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
nhan ap » khan ap, nhan tai, nhan dan
han ap » han tap, khan ap, dan ap

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 tam) or (truong cao)) thong cong tan ((nhan ap) OR (han ap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((trung tam) OR (truong cao)) thong cong tan ((nhan ap) OR (han ap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh ((trung tam) or (truong cao)) thong cong tan ((nhan ap) OR (han ap))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((trung tam) or (truong cao)) thong cong tan ((nhan ap) OR (han ap))*.