Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
nhung cong » dung cong, thong cong, hang cong
tranh chap » tranh cua, trinh chat
hanh tang » hanh trang, hanh mang, hanh tung
cua nhung » va nhung
tan tranh » tan tran, can tranh, lan tranh
anh tang » anh bang, anh dang, anh nang
cong tan » cong tac, cong san, cong thanh

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 (chieu sang)) - ((hanh tang) or (anh tang)) cua nhung cong tan tranh chap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu sang)) - ((hanh tang) OR (anh tang)) cua nhung cong tan tranh chap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) OR (chieu sang)) - ((hanh tang) or (anh tang)) cua nhung cong tan tranh chap".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) OR (chieu sang)) - ((hanh tang) or (anh tang)) cua nhung cong tan tranh chap*.