Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
thieu sach » chieu sach, thien hach, theo sach
thanh tung » thanh cong
cua truong » cua trung, xuan truong, cac truong
hieu cach » hieu cac, chieu sach, hieu ca
cong toan » cong tan, cong hoan, cong tuan
toan can » toan ban, toan cao, toan cau
can cau » van cau, ban cau, ca cau

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 (hieu cach)) - ((thanh trung) or (thanh tung)) cua truong cong toan can cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (hieu cach)) - ((thanh trung) OR (thanh tung)) cua truong cong toan can cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sach) OR (hieu cach)) - ((thanh trung) or (thanh tung)) cua truong cong toan can cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) OR (hieu cach)) - ((thanh trung) or (thanh tung)) cua truong cong toan can cau*.