Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
cam duc » cam xuc, cao duc, pham duc
vai cua » dai cua, hai cua, lai cua
sach ky » sac ky, sach y, sach ty
dao duc » giao duc, tao duoc
cao suc » cao su, cao duc
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ky lang xa hoi. hieu qua ((cam duc) or (((dao duc) or (cao suc)))) van hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky lang xa hoi. hieu qua ((cam duc) OR (((dao duc) OR (cao suc)))) van hanh vai cua te.
• Adding a wildcard symbol may retrieve word variants: hoc sach ky lang xa hoi. hieu qua ((cam duc) or (((dao duc) or (cao suc)))) van hanh vai cua te*.