Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
dang xay » dang van, van xay
nam truc » nam truoc, nam trung, nam thuoc
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
vu sach » vu bach, su sach, vu khach
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, lang van
cuu tre » cua tre, cau tren, cau treo
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ty ((lang xa) OR (dang xay)) hoi. hieu van ((nam truc) or (nam thuc)) va danh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty ((lang xa) OR (dang xay)) hoi. hieu van ((nam truc) OR (nam thuc)) va danh vi cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty ((lang xa) OR (dang xay)) hoi. hieu van ((nam truc) or (nam thuc)) va danh vi cuu tre*".