Perhaps you should try some spelling variations:
dai sua » dai cua
tu sach » thu sach, su sach, te sach
van dau » van dao, phan dau
thi van » thi lan, thi hanh, thi nang
xuc va » duc va, luc va, xac va
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
dai su » dai so, dan su, lai su
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: tu sach y nang x hoi. thi van dau ((xuc va) or (tuc va)) hanh ((dai su) OR (dai sua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. thi van dau ((xuc va) OR (tuc va)) hanh ((dai su) OR (dai sua)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang x hoi. thi van dau ((xuc va) or (tuc va)) hanh ((dai su) OR (dai sua)) triet*".