Perhaps you should try some spelling variations:
hanh hai » thanh hai, nhanh hai, hang hai
ban hanh » ban hang
cuu tre » cau tren, cau treo
duc ban » duc tan, duc van, dua ban
cua tre » cua te, cua triet, dua tren
nang xa » nang x, lang xa, nang ma
ve cac » va cac, vien cac
sac ky » cac ky, sai ky
ve cam » ve cham, va cam, ve cai
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 nang xa hoi. hieu ((ve cam) OR (ve cac)) duc ban hanh hai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang xa hoi. hieu ((ve cam) OR (ve cac)) duc ban hanh hai ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang xa hoi. hieu ((ve cam) OR (ve cac)) duc ban hanh hai ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: su sac ky nang xa hoi. hieu ((ve cam) OR (ve cac)) duc ban hanh hai ((cua tre) or (cuu tre))*.