Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
luong tai » dung tai, luong va
tong tap » tuong tac, trong tan, cong tac
quan cap » quan cau, quan lap, quang cao
mang xa » mang may, dang xay, mang cua
lang xa » lang ha, dang xay, lang van

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - hanh ((mang xa) or (lang xa)) thuong ((tong tap) or (luong tai)) quan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh ((mang xa) OR (lang xa)) thuong ((tong tap) OR (luong tai)) quan cap.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh ((mang xa) or (lang xa)) thuong ((tong tap) or (luong tai)) quan cap*.