Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thu cac » tu cac, thu xac, thu dac
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va danh, ban hanh
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
thu cuc » thi cuc, thu tuc, thu cua
cac lo » cac lop, cac co, cac bo
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: ((thu cac) OR (thu cuc)) ky nang x hoi. hieu va cac lo ((va hanh) or (va thanh)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu cac) OR (thu cuc)) ky nang x hoi. hieu va cac lo ((va hanh) OR (va thanh)) vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu cac) OR (thu cuc)) ky nang x hoi. hieu va cac lo ((va hanh) or (va thanh)) vai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((thu cac) OR (thu cuc)) ky nang x hoi. hieu va cac lo ((va hanh) or (va thanh)) vai cua tre*.