Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
thu sach » thuat sach, thuoc sach, thu hoach
tham xuc » tham nuoc, tham thuc, pham duc
dang xay » van xay
dang van » hoang van, hang va
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
va tham » van tham, va cham, va thanh
hieu va » lieu va, hieu qua
tu sach » su sach, te sach, tu cach
xuc va » duc va, tuc va, luc va
vi va » vi van, vai va, vu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thu sach)) ky ((dang xay) OR (dang van)) hoi. hieu va tham xuc va danh vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky ((dang xay) OR (dang van)) hoi. hieu va tham xuc va danh vi va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ky ((dang xay) OR (dang van)) hoi. hieu va tham xuc va danh vi va triet*".