Perhaps you should try some spelling variations:
hieu quan » lieu quan, thien quan, lien quan
thanh va » thanh van, hanh va, thanh ha
hoc sach » hoc sinh, hoc anh
tu nang » tru nang, tu nong, tu nano
hoc cac » hoc cao
cao duc » dao duc, cao suc, giao duc
duc gia » quoc gia
va cua » va chua, via cua, ca cua
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc sach) OR (hoc cac)) tu nang x hoi. ((hieu quan) OR (hieu qua)) cao duc gia thanh va cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc sach) OR (hoc cac)) tu nang x hoi. ((hieu quan) OR (hieu qua)) cao duc gia thanh va cua te".
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) OR (hoc cac)) tu nang x hoi. ((hieu quan) OR (hieu qua)) cao duc gia thanh va cua te*.