Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
qua cac » cua cac
danh ca » dan ca, doanh cua, danh cho
cua tre » cuu tre, cua triet, dua tren
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » tuc va, luc va, xac va
cua te » cua tu

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 ma hoi. hieu qua cac ((xuc va) or (duc va)) danh ca ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ma hoi. hieu qua cac ((xuc va) OR (duc va)) danh ca ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang ma hoi. hieu qua cac ((xuc va) or (duc va)) danh ca ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ma hoi. hieu qua cac ((xuc va) or (duc va)) danh ca ((cua tre) OR (cua te))*.