Perhaps you should try some spelling variations:
dinh cuu » dinh chi
hieu van » hieu va, thien van, lieu va
vinh cuu » sinh cua, dinh cu, tinh cua
tu sach » thu sach, su sach, te sach
truc va » thuc va, thuc vat, trung va
van lam » van nam
y nang » ky nang, ly nang, v nang
tuc va » thuc va, tuc xa, duc va
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. hieu van lam ((tuc va) OR (truc va)) tinh ((vinh cuu) or (dinh cuu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu van lam ((tuc va) OR (truc va)) tinh ((vinh cuu) OR (dinh cuu)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang x hoi. hieu van lam ((tuc va) OR (truc va)) tinh ((vinh cuu) or (dinh cuu)) tre*".