Perhaps you should try some spelling variations:
lang muong » lang tuong, long muong, nang luong
muong dan » huong dan, muong van, tuong dan
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
thang va » hang va, thong va, thanh va
trang va » tran van, hang va
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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 (trang va)) lang muong dan than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu sach - thanh ((thang va) OR (trang va)) lang muong dan than cau".
• Adding a wildcard symbol may retrieve word variants: theo chu sach - thanh ((thang va) OR (trang va)) lang muong dan than cau*.