Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
nang ma » tang ma, sang ma, nang cao
nang va » nang van, hang va, bang va
cam luc » cam xuc, cau luc
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
y nang » ky nang, ly nang, v nang
luc va » duc va, tuc va, loc va
x hoi » o hoi, x ho, 5 hoi

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 y nang ((x hoi) OR (xa hoi)). hieu ve cam luc va ((nang va) or (nang ma)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y nang ((x hoi) OR (xa hoi)). hieu ve cam luc va ((nang va) OR (nang ma)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y nang ((x hoi) OR (xa hoi)). hieu ve cam luc va ((nang va) or (nang ma)) cua tre*".