Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hanh tai, anh thai
hinh thai » sinh thai, tinh thai, dinh thi
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu ve » hieu va, hieu van
duc van » duc tan, duc manh, duc phan
cuu tre » cua tre, cau tren, cau treo
su sai » su tai, su hai, su dai
sai ky » sac ky
ve cam » ve cham, ve cac, va cam

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