Perhaps you should try some spelling variations:
phan dau » phan tu, hang dau
ve triet » va trien, su triet
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
ve phan » va phan, ke phan, ve phat
va hanh » van hanh, va thanh, ban hanh
hanh ve » hanh vi, hanh va, hanh kem
ma hoi » mai hoi, xa hoi, ma hoa
dau va » dau ve, cau va, lau va
ve ve » de ve, va ve, ke ve

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 ty nang ma hoi. hieu ve phan dau va hanh ve ve triet~.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ma hoi. hieu ve phan dau va hanh ve ve triet*.