Perhaps you should try some spelling variations:
qua tham » qua cham, qua than, qua thanh
tham xuc » tham nuoc, tham thuc, pham duc
te sach » toc sach
dan dau » danh dau, doan dau, ban dau
van dau » van dao, phan dau
dan dat » dung dat, dong dat, dinh dat
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
sach ky » sac ky, sach y, sach ty
xuc va » duc va, tuc va, luc va
ma hoi » mai hoi, xa hoi, ma hoa

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