Perhaps you should try some spelling variations:
trien quang » tran quang, tuyen quang, dien quang
thuoc sach » hoc sach, nuoc sach, thuat sach
dang xay » dang van, van xay
cau tren » cu tren, ca tren, cau treo
dau tren » dau tien, dat tren, dau tieng
xay hoi » xa hoi, tay hoi, cay phoi
nam tuc » nam thuc, nam truc, nam tu
va hanh » van hanh, va thanh, va danh
y dang » ky dang, 2 dang, _ dang
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach y dang xay hoi. trien quang nam tuc va hanh vi ((cau tren) or (dau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y dang xay hoi. trien quang nam tuc va hanh vi ((cau tren) OR (dau tren)).
• Adding a wildcard symbol may retrieve word variants: thuoc sach y dang xay hoi. trien quang nam tuc va hanh vi ((cau tren) or (dau tren))*.