Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hieu thien » hieu hien, chieu chien, dieu khien
hach qua » bach qua, hanh qua, sach quan
va thanh » gia thanh, ban thanh, va tinh
thanh ha » thanh hoa, thanh hai, nhanh ha
ky lang » ky nang, ky tang, tay lang
ky dang » ky nang, ky danh
cua tre » cua te, cuu tre, cua triet
tu ban » thu ban, te ban
qua va » quan va, qua van, vua va
ha cua » hoa cua, hai cua, nha 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 ban ((ky lang) OR (ky dang)) xa hoi. hieu thien hach qua va thanh ha cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ban ((ky lang) OR (ky dang)) xa hoi. hieu thien hach qua va thanh ha cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ban ((ky lang) OR (ky dang)) xa hoi. hieu thien hach qua va thanh ha cua tre*.