Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
thanh vai » thanh hai, thanh tai, thanh oai
tham soc » cham soc, tham nuoc, ham so
thai son » thai den, thai do, thai hoc
cua tre » cua te, cuu tre, cua triet
lang ha » long ha
hieu va » lieu va, hieu qua
ky lang » ky nang, ky dang, ky tang
te cac » tu cac, ve cac, te cao
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: te cac ky lang ha hoi. hieu va ((tham soc) or (thai son)) van ((thanh vai) OR (thanh van)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cac ky lang ha hoi. hieu va ((tham soc) OR (thai son)) van ((thanh vai) OR (thanh van)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cac ky lang ha hoi. hieu va ((tham soc) or (thai son)) van ((thanh vai) OR (thanh van)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te cac ky lang ha hoi. hieu va ((tham soc) or (thai son)) van ((thanh vai) OR (thanh van)) cua tre*.