Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhieu tang » chieu sang, nhiet nang
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, hieu van
cua nhung » va nhung
anh nang » ganh nang, anh bang, anh dang
nang cua » mang cua, hang cua, nang dua
cong bai » cuong bai, cong hai, cung bai
bai toan » bai tap
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 (((hieu lang) OR (nhieu tang)))) - anh nang cua nhung cong bai toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (((hieu lang) OR (nhieu tang)))) - anh nang cua nhung cong bai toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (((hieu lang) OR (nhieu tang)))) - anh nang cua nhung cong bai toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (((hieu lang) OR (nhieu tang)))) - anh nang cua nhung cong bai toan tap*.