Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
kinh ve » kinh te, dinh ve, minh ve
cuu tre » cua tre, cau tren, cau treo
ve cac » va cac, vien cac
xuc va » tuc va, luc va, xac va
ve cuu » ve cau, ve chu, ve cua
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (thuat lanh)) ky nang x hoi. hieu ve cac ((xuc va) or (duc va)) kinh ve cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thuat lanh)) ky nang x hoi. hieu ve cac ((xuc va) OR (duc va)) kinh ve cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thuat lanh)) ky nang x hoi. hieu ve cac ((xuc va) or (duc va)) kinh ve cuu tre*.