Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
dinh viet » ninh viet, danh viet, trinh viet
viet cua » viec cua, viet ca, viet qua
ve cham » va cham, ve chat, vu cham
vu sach » vu bach, su sach, vu khach
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
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: ((vu sach) or (thuat lanh)) ky nang x hoi. hieu ve cham ((xuc va) OR (tuc va)) dinh viet cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (thuat lanh)) ky nang x hoi. hieu ve cham ((xuc va) OR (tuc va)) dinh viet cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (thuat lanh)) ky nang x hoi. hieu ve cham ((xuc va) OR (tuc va)) dinh viet cua tre".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (thuat lanh)) ky nang x hoi. hieu ve cham ((xuc va) OR (tuc va)) dinh viet cua tre*.