Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
nhung cong » thong cong, hang cong, nhung don
hanh manh » hanh mang, lanh manh, hoang manh
dung cong » dung trong
manh cua » doanh cua, ban cua
tac nhan » tao nhan, cac nhan, dac nhan
nhan cap » khan cap, than cap, nhan cach

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chiet tach) or (chieu sach)) - hanh manh cua ((nhung cong) OR (dung cong)) tac nhan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chiet tach) OR (chieu sach)) - hanh manh cua ((nhung cong) OR (dung cong)) tac nhan cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chiet tach) or (chieu sach)) - hanh manh cua ((nhung cong) OR (dung cong)) tac nhan cap".
• Adding a wildcard symbol may retrieve word variants: theo ((chiet tach) or (chieu sach)) - hanh manh cua ((nhung cong) OR (dung cong)) tac nhan cap*.