Perhaps you should try some spelling variations:
duoc hoi » quoc hoi, duoc hoc, duoc si
tru nang » tri nang, truc nano, thi nang
tra nang » thi nang, kha nang, da nang
hieu van » hieu va, thien van, lieu va
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
cam luc » cam xuc, cau luc
van cam » van nam, van lam, van cau
tu sach » thu sach, su sach, te sach
tu nang » tu nong, tu nano, tu lang
cuu tre » cua tre, cau tren, cau treo
luc va » duc va, tuc va, loc va
va cuu » va cau, va chu, va huu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((tu nang) OR (((tru nang) OR (tra nang)))) duoc hoi. hieu van cam luc va hanh va cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((tu nang) or (((tru nang) OR (tra nang)))) duoc hoi. hieu van cam luc va hanh va cuu tre~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((tu nang) or (((tru nang) OR (tra nang)))) duoc hoi. hieu van cam luc va hanh va cuu tre*.