Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thien van » thi van
cau tren » cu tren, dau tren, ca tren
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, mang xa
lam xuc » cam xuc, lam duoc
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
xuc va » duc va, tuc va, luc va
vi cau » va cau, ve cau, di cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ky ((nang xa) or (nang ma)) hoi. ((hieu va) or (thien van)) lam xuc va danh vi cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky ((nang xa) OR (nang ma)) hoi. ((hieu va) OR (thien van)) lam xuc va danh vi cau tren.
• Adding a wildcard symbol may retrieve word variants: thuat sach ky ((nang xa) or (nang ma)) hoi. ((hieu va) or (thien van)) lam xuc va danh vi cau tren*.