Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
cong ngang » cong nhan, cong quang, cong lang
ngang toan » nganh toan, dang toan, quang toan
trung cap » truong cao, trung tam
ho chieu » theo chieu, hoc thieu, doi chieu
toan cao » toan ban, toan tap
lang ha » long ha

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 - hanh ((lang ha) or (trung cap)) trong cong ngang toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((lang ha) OR (trung cap)) trong cong ngang toan cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((lang ha) or (trung cap)) trong cong ngang toan cao*.