Perhaps you should try some spelling variations:
thien van » thi van
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
than cua » nhan cua, thai cua, ban cua
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
so sac » so sach, so dac
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sac ky lang xa hoi. ((thien van) or (hieu va)) bac xuc ((van hanh) OR (ban hanh)) than cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sac ky lang xa hoi. ((thien van) OR (hieu va)) bac xuc ((van hanh) OR (ban hanh)) than cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sac ky lang xa hoi. ((thien van) or (hieu va)) bac xuc ((van hanh) OR (ban hanh)) than cua tre*".