Perhaps you should try some spelling variations:
thanh hoa » thanh pho
thanh hai » thanh phan, thanh san
cua tre » cua te, cuu tre, cua triet
dang xa » dang xay, lang xa, dang ha
ve chao » ve chat, ve cham, ve chang
ky dang » ky nang, ky danh
su cac » tu cac, su cao, su can
xu ban » xuc ban, tu ban, vu ban
ve cho » ve co, ve che, de cho

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cac ky dang xa hoi. hieu ((ve chao) or (ve cho)) xu ban ((thanh hai) OR (thanh hoa)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cac ky dang xa hoi. hieu ((ve chao) OR (ve cho)) xu ban ((thanh hai) OR (thanh hoa)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cac ky dang xa hoi. hieu ((ve chao) or (ve cho)) xu ban ((thanh hai) OR (thanh hoa)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su cac ky dang xa hoi. hieu ((ve chao) or (ve cho)) xu ban ((thanh hai) OR (thanh hoa)) cua tre*.