Perhaps you should try some spelling variations:
nhanh thai » nhanh thi, nhanh thanh, nhanh thang
hanh thai » hinh thai, hanh tai, anh thai
hoc sach » hoc sinh, hoc cac, hoc anh
hieu van » hieu va, thien van, lieu va
nam tuc » nam thuc, nam truc, nam tu
tuc va » thuc va, truc va, tuc xa
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 (dac sac)) ky nang x hoi. hieu van nam tuc va ((hanh thai) OR (nhanh thai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (dac sac)) ky nang x hoi. hieu van nam tuc va ((hanh thai) OR (nhanh thai)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc sach) or (dac sac)) ky nang x hoi. hieu van nam tuc va ((hanh thai) OR (nhanh thai)) cua te".
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) or (dac sac)) ky nang x hoi. hieu van nam tuc va ((hanh thai) OR (nhanh thai)) cua te*.