Perhaps you should try some spelling variations:
thieu sach » chieu sach, hieu cach, theo sach
thien hach » thien thanh, hien hanh
truong lop » truong hop, truong lon, truong long
phuong ban » phuong bang, phuong lan, phuong bac
trung lap » trung cap, truong lam, trung tam
ban hang » ngan hang
hang dau » hang va, hang tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((thieu sach) OR (thien hach)) - thanh ((trung lap) or (truong lop)) bang phuong ban hang dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((thieu sach) OR (thien hach)) - thanh ((trung lap) OR (truong lop)) bang phuong ban hang dau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((thieu sach) OR (thien hach)) - thanh ((trung lap) or (truong lop)) bang phuong ban hang dau*".