Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
thai cua » than cua, tai cuc, tri cua
duc manh » suc manh, duc anh, duc minh
cua tre » cua te, cuu tre, cua triet
duc van » duc va, duc tan, duc phan
ky dang » ky nang, ky danh
dang ha » dong ha, dung ha, lang ha
ve cham » va cham, ve chat, vu cham
su sai » su tai, su hai, su dai
sai ky » sac ky
ve cam » ve cac, va cam, ve cai
ha hoi » hoa hoi, ha noi, xa hoi

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 ha hoi. hieu ((ve cam) or (ve cham)) ((duc van) or (duc manh)) hanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky dang ha hoi. hieu ((ve cam) OR (ve cham)) ((duc van) OR (duc manh)) hanh thai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sai ky dang ha hoi. hieu ((ve cam) or (ve cham)) ((duc van) or (duc manh)) hanh thai cua tre*.