Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van chat » cao chat
hanh lam » thanh lap, hanh va, dinh lam
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
xuc van » luc van, vuc van, xuc ban
duc van » duc va, duc tan, duc manh

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 ty nang xa hoi. hieu van chat ((xuc van) or (duc van)) ((hanh lam) or (hanh kem)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. hieu van chat ((xuc van) OR (duc van)) ((hanh lam) OR (hanh kem)) va triet.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu van chat ((xuc van) or (duc van)) ((hanh lam) or (hanh kem)) va triet*.