Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhiet nang » nhiet dong, viet nang, nhieu tang
hanh manh » hanh mang, lanh manh, hoang manh
ban huong » bang phuong, ban hang, anh huong
manh cua » doanh cua, ban cua
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (nhiet nang)) - hanh manh cua ban huong dan ((toan cau) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (nhiet nang)) - hanh manh cua ban huong dan ((toan cau) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (nhiet nang)) - hanh manh cua ban huong dan ((toan cau) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (nhiet nang)) - hanh manh cua ban huong dan ((toan cau) OR (toan tap))*.