Perhaps you should try some spelling variations:
nhanh thai » nhanh thi, nhanh thanh, nhanh thang
khoa tang » kho tang, khoa dang, khoa tieng
dai khoa » da khoa, tai khoa, dac khoa
hieu van » hieu va, thien van, lieu va
va nhanh » va thanh, va hanh, va nhan
thai cua » than cua, tai cuc, tri cua
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va
cam duc » cam xuc, cao duc, pham duc
cua tre » cua te, cuu tre, cua triet
su dai » sau dai, si dai, su tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: su dai khoa tang xa hoi. ((hieu ve) OR (hieu van)) cam duc va nhanh thai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su dai khoa tang xa hoi. ((hieu ve) OR (hieu van)) cam duc va nhanh thai cua tre".
• Adding a wildcard symbol may retrieve word variants: su dai khoa tang xa hoi. ((hieu ve) OR (hieu van)) cam duc va nhanh thai cua tre*.