Perhaps you should try some spelling variations:
luat tre » luat tri, luat thue, luat ve
hieu van » hieu va, thien van, lieu va
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
bao xuc » bao luc, bao thuc
sach ty » sach tu, sach thu, xach tay
lang xa » lang ha, dang xay, lang van
van bao » van ban, van dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo ((sach ty) OR (sach y)) lang xa hoi. hieu van bao xuc ((va hanh) or (va danh)) trinh luat tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo ((sach ty) OR (sach y)) lang xa hoi. hieu van bao xuc ((va hanh) OR (va danh)) trinh luat tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo ((sach ty) OR (sach y)) lang xa hoi. hieu van bao xuc ((va hanh) or (va danh)) trinh luat tre".
• Adding a wildcard symbol may retrieve word variants: bo ((sach ty) OR (sach y)) lang xa hoi. hieu van bao xuc ((va hanh) or (va danh)) trinh luat tre*.