Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc dieu
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
gian bana » gian ban, gian lang, gian lan
cong dan » cong san, cong tan, huong dan
gian dan » gian lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) OR (hoc hien)) sach - thanh trung cua nhung cong dan ((gian bana) or (gian dan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc hien)) sach - thanh trung cua nhung cong dan ((gian bana) OR (gian dan)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) OR (hoc hien)) sach - thanh trung cua nhung cong dan ((gian bana) or (gian dan))".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) OR (hoc hien)) sach - thanh trung cua nhung cong dan ((gian bana) or (gian dan))*.