Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » trieu tinh, lieu tinh, chau tinh
dung cong » dung trong
chat lua » chat cua, chat va, chat huu
cong toc » cong tac, cong coc, cong uoc
hao lua » bao lua, khao luan, phap lua
toc han » toc san, hoc han, toc ha
han tap » han tai, toan tap, nhan tai

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) or (chieu tinh)) - hoang ((hao lua) OR (chat lua)) dung cong toc han tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chieu tinh)) - hoang ((hao lua) OR (chat lua)) dung cong toc han tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) or (chieu tinh)) - hoang ((hao lua) OR (chat lua)) dung cong toc han tap".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (chieu tinh)) - hoang ((hao lua) OR (chat lua)) dung cong toc han tap*.