Perhaps you should try some spelling variations:
truong cao » truong dai
thong cong » trong cong, tong cong, thong thong
hieu sach » chieu sach, hieu cach, dien sach
trung cua » truong cua, trung tuan, trung cap
doc hieu » toc thieu, hoc thieu, hoc hien
dan than » dan chan, van than, dan toan
ban than » ban thanh, van thanh, ban hang

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu sach - manh ((trung cua) or (truong cao)) thong cong ((dan than) OR (ban than)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sach - manh ((trung cua) OR (truong cao)) thong cong ((dan than) OR (ban than)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu sach - manh ((trung cua) or (truong cao)) thong cong ((dan than) OR (ban than)) cao".
• Adding a wildcard symbol may retrieve word variants: doc hieu sach - manh ((trung cua) or (truong cao)) thong cong ((dan than) OR (ban than)) cao*.