Perhaps you should try some spelling variations:
hanh hai » thanh hai, nhanh hai, hang hai
van hanh » van thanh, ban hanh, van anh
kho tang » cao tang
cua tre » cua te, cuu tre, cua triet
hai cua » thai cua, dai cua, hoi cua
xuc van » duc van, luc van, xuc ban
hieu ve » hieu va, hieu van
ky tang » ky nang, ky trong, tay tang
ky dang » ky nang, ky danh
ve cam » ve cham, ve cac, va cam
su sac » su sach, su cac, su xac

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

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