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

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