Perhaps you should try some spelling variations:
kho tang » cao tang
tuan tai » toan tai, quan tai, tan tai
nam duoc » nam thuoc, da duoc, dat duoc
van tuan » van quan, van ban, anh tuan
cua tre » cua te, cuu tre, cua triet
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va, hieu van
tai cua » thai cua, tai cuc, tri cua
cam duc » cam xuc, cao duc, lam duoc
sai kho » dai kho, tai khoa, dai khoa
su sai » su tai, su hai, su dai

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 kho tang xa hoi. hieu ve ((((cam duc) or (nam duoc))) or (pham duc)) van tuan tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai kho tang xa hoi. hieu ve ((((cam duc) OR (nam duoc))) OR (pham duc)) van tuan tai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sai kho tang xa hoi. hieu ve ((((cam duc) or (nam duoc))) or (pham duc)) van tuan tai cua tre*.