Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
danh dien » dinh dien, danh kien, danh lien
chat truc » cau truc, chat xuc
hieu van » hieu va, thien van, lieu va
van chat » cao chat
danh dai » danh dau, danh di, danh sai
truc va » thuc va, thuc vat, trung va
cua tre » cua te, cuu tre, cua triet
v nang » va nang, vu nang, van nang
y nang » ky nang, ly nang, may nang

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) OR (v nang)) xa hoi. hieu van chat truc va ((danh dai) or (danh dien)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((y nang) OR (v nang)) xa hoi. hieu van chat truc va ((danh dai) OR (danh dien)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ((y nang) OR (v nang)) xa hoi. hieu van chat truc va ((danh dai) or (danh dien)) cua tre".
• Adding a wildcard symbol may retrieve word variants: thuat sach ((y nang) OR (v nang)) xa hoi. hieu van chat truc va ((danh dai) or (danh dien)) cua tre*.