Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
dung cong » dung trong
thuat cao » thuat co, thuat bao, thuat cam
ho chieu » theo chieu, hoc thieu, doi chieu
tung vat » tang vat, tung va, luong vat
dung vat » dung va, dong vat, dung dat
cong tac » cong ty
thai cao » tai cao, thoai cac, toan cao

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 ((tung vat) or (dung vat)) dung cong tac ((thai cao) OR (thuat cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((tung vat) OR (dung vat)) dung cong tac ((thai cao) OR (thuat cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh ((tung vat) or (dung vat)) dung cong tac ((thai cao) OR (thuat cao))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((tung vat) or (dung vat)) dung cong tac ((thai cao) OR (thuat cao))*.