Perhaps you should try some spelling variations:
thien van » thi van
cuu tre » cau tren, cau treo
dinh vi » dinh ve, dinh viet, dinh tri
va dinh » van dinh, va kinh, va tinh
nam xuc » cam xuc, nam xua, nam thuc
tu sach » thu sach, su sach, te sach
cua tre » cua te, cua triet, dua tren
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, ly nang, may nang
xuc va » duc va, tuc va, luc va
v nang » va nang, vu nang, van nang

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 ((y nang) OR (v nang)) ma hoi. thien van nam xuc va dinh vi ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (v nang)) ma hoi. thien van nam xuc va dinh vi ((cuu tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y nang) OR (v nang)) ma hoi. thien van nam xuc va dinh vi ((cuu tre) or (cua tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) OR (v nang)) ma hoi. thien van nam xuc va dinh vi ((cuu tre) or (cua tre))*.