Perhaps you should try some spelling variations:
hanh dau » hang dau, danh dau, han dau
van hanh » van thanh, ban hanh, van anh
cham duc » pham duc, cham soc, pham duy
cuu tre » cua tre, cau tren, cau treo
duc van » duc va, duc tan, duc manh
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu vu » hieu su, dieu vu, hieu qua
dau cuu » dau cua, dau cuoi
hieu ve » hieu van
hieu va » lieu va, hieu qua
te sai » te tai, te bai, te lai
sai ky » sac ky

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky tang xa hoi. ((hieu vu) OR (((hieu ve) OR (hieu va)))) cham duc van hanh dau cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sai ky tang xa hoi. ((hieu vu) or (((hieu ve) OR (hieu va)))) cham duc van hanh dau cuu tre~".
• Adding a wildcard symbol may retrieve word variants: te sai ky tang xa hoi. ((hieu vu) or (((hieu ve) OR (hieu va)))) cham duc van hanh dau cuu tre*.