Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu sach » chieu sach, thien hach, hieu cach
thong dung » thong cong, thong thuong
trung can » trung cap, trung van, trong can
can thong » ban thong, cac thong, van thong
dung dan » dung dat, dung san, tung dan
dan danh » van danh, han danh, ban danh
hieu ca » hieu cac, hieu cua, hieu va
danh ca » dan ca, doanh cua, danh cho

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 ca)) - thanh trung can thong dung dan danh ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (hieu ca)) - thanh trung can thong dung dan danh ca*.