Perhaps you should try some spelling variations:
tan thanh » tran thanh, tang thanh, toan thanh
thanh di » thanh doi, thanh de, thanh do
ky tang » ky nang, ky dang, kho tang
van hoi » van hoa, van hoe, van loi
van hoc » van hoa
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky tang ((van hoi) OR (van hoc)). hieu va cam duc tan thanh di cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky tang ((van hoi) OR (van hoc)). hieu va cam duc tan thanh di cua tre".
• Adding a wildcard symbol may retrieve word variants: tu cac ky tang ((van hoi) OR (van hoc)). hieu va cam duc tan thanh di cua tre*.