Perhaps you should try some spelling variations:
vinh cuu » dinh cuu, sinh cua, dinh cu
su sach » so sach, vu sach
truc va » thuc va, thuc vat, trung va
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
tuc va » thuc va, tuc xa, duc va
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao
ma hoi » mai hoi, xa hoi, ma hoa
vi luu » vi lua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y nang ma hoi. hieu va cam ((tuc va) or (truc va)) hanh ((vinh cuu) or (vi luu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ma hoi. hieu va cam ((tuc va) OR (truc va)) hanh ((vinh cuu) OR (vi luu)) tre.
• Adding a wildcard symbol may retrieve word variants: su sach y nang ma hoi. hieu va cam ((tuc va) or (truc va)) hanh ((vinh cuu) or (vi luu)) tre*.