Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
ly nang » ky nang, ly hang, ly quang
ly vang » ly hang, ly van, ly quang
van cam » van nam, van lam, van cau
cam tuc » cam xuc, cam tu, nam thuc
xa hanh » xa thanh, xa khanh, va hanh
y nang » ky nang, v nang, may nang
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((y nang) or (((ly nang) or (ly vang)))) ma hoi. hieu van cam tuc xa hanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((y nang) OR (((ly nang) OR (ly vang)))) ma hoi. hieu van cam tuc xa hanh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: thu sach ((y nang) or (((ly nang) or (ly vang)))) ma hoi. hieu van cam tuc xa hanh vi cua tu*.