Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu sach » chieu sach, hieu cach, theo sach
thien hach » thien thanh, hien hanh
bang huong » bang phuong, ban huong, bang suong
trung lap » trung cap, truong lam, truong lop
huong ban » huong dan, huong ben, huong lan
lap bang » lap ban, cao bang, mat bang
phap cau » phan cau, pha cau, phap ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sach) or (thien hach)) - thanh trung lap bang huong ban phap cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (thien hach)) - thanh trung lap bang huong ban phap cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (thien hach)) - thanh trung lap bang huong ban phap cau*.