Perhaps you should try some spelling variations:
van luat » va luat, van xuat, van luan
dan luat » dan luan, dap luat, dan dat
thanh va » thanh van, hanh va, thanh ha
va thanh » gia thanh, ban thanh, va tinh
trang xa » trang va, trang ha, trong xa
duoc va » nuoc va, duc va, duoc ma
su sach » so sach, vu sach
tang xa » tang ma, lang xa, tang ha
cua tre » cua te, cuu tre, cua triet
va cua » va chua, via cua, ca cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y ((tang xa) or (trang xa)) hoi. hieu ((van luat) OR (dan luat)) duoc va thanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((tang xa) OR (trang xa)) hoi. hieu ((van luat) OR (dan luat)) duoc va thanh va cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y ((tang xa) or (trang xa)) hoi. hieu ((van luat) OR (dan luat)) duoc va thanh va cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach y ((tang xa) or (trang xa)) hoi. hieu ((van luat) OR (dan luat)) duoc va thanh va cua tre*.