Perhaps you should try some spelling variations:
tham soc » cham soc, tham nuoc, thai son
vien cac » vien bach, vien dai, vien da
cua tre » cua te, cuu tre, cua triet
ky lang » ky nang, ky tang, tay lang
va hanh » van hanh, va thanh, va danh
ky dang » ky nang, ky danh
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
vi cua » vai cua, di cua
soc va » hoc va, loc va, doc va
ve cac » va cac
ha hoi » hoa hoi, ha noi, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ve cac) or (vien cac)) ((ky lang) OR (ky dang)) ha hoi. hieu va tham soc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ve cac) OR (vien cac)) ((ky lang) OR (ky dang)) ha hoi. hieu va tham soc va hanh vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ve cac) or (vien cac)) ((ky lang) OR (ky dang)) ha hoi. hieu va tham soc va hanh vi cua tre*".