Perhaps you should try some spelling variations:
thien van » thi van
va thanh » gia thanh, ban thanh, va tinh
kho tang » cao tang
than cua » nhan cua, thai cua, ban cua
hieu van » hieu va, lieu va, hieu ve
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, cua triet
sac kho » suc khoe, cac khoi, dac khoa
tang xa » trang xa, tang ma, lang xa
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 kho tang xa hoi. ((hieu van) or (thien van)) chao xu ((va thanh) or (va danh)) than cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac kho tang xa hoi. ((hieu van) OR (thien van)) chao xu ((va thanh) OR (va danh)) than cua tre.
• Adding a wildcard symbol may retrieve word variants: su sac kho tang xa hoi. ((hieu van) or (thien van)) chao xu ((va thanh) or (va danh)) than cua tre*.