Perhaps you should try some spelling variations:
lang muong » lang tuong, long muong, nang luong
muong dan » huong dan, muong van, tuong dan
dan thanh » dang thanh, danh thanh, ban thanh
thanh cac » hanh cac, thanh bac, thanh ca
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
thang va » hang va, trang va, thanh va
thong va » thong cua, truong va, thong qua

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu sach - thanh ((thang va) or (thong va)) lang muong dan thanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - thanh ((thang va) OR (thong va)) lang muong dan thanh cac.
• Adding a wildcard symbol may retrieve word variants: theo chu sach - thanh ((thang va) or (thong va)) lang muong dan thanh cac*.