Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
dang xay » dang van, van xay
ban hanh » ban hang
hieu van » hieu va, thien van, lieu va
te sach » toc sach
vai cua » dai cua, hai cua, lai cua
sach ty » sach y, sach tu, sach thu
nam xuc » cam xuc, nam xua, nam duoc
xay hoi » xa hoi, tay hoi, cay phoi
ty dang » ty xang, ky dang, ty hang
vi cua » di cua

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

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