Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
chieu sach » chinh sach, chiet tach, chieu sang
hieu lang » chieu sang, hieu quang, nhieu tang
tuong ban » tuong bang, tuong dan, tuong quan
trong ban » trong san, trong tan, trong quan
trung va » truong va, trang va, trung ha
hanh cac » hang cac, hanh cat, nhanh cay

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu lang) or (chieu sach)) - hanh trung va nhung ((tuong ban) OR (trong ban)) hanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu lang) OR (chieu sach)) - hanh trung va nhung ((tuong ban) OR (trong ban)) hanh cac*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu lang) or (chieu sach)) - hanh trung va nhung ((tuong ban) OR (trong ban)) hanh cac*".