Perhaps you should try some spelling variations:
vanh tai » van tai, hanh tai, anh tai
van vanh » van anh, van hanh, van manh
cuu tre » cua tre, cau tren, cau treo
ky dang » ky danh
tai cuu » tai cuc, tai buu, tai cua
duc van » duc va, duc tan, duc manh
ve cham » va cham, ve chat, vu cham
su sai » su tai, su hai, su dai
ve cam » ve cac, va cam, ve cai

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

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