Perhaps you should try some spelling variations:
chat triet » chet triet, phat trien, chat thien
hieu van » hieu va, thien van, lieu va
chat xuc » chat huu, cam xuc, chao xu
dinh lam » dinh van, tinh lao
lam chat » luan chat, cao chat, ly chat
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
va dinh » van dinh, va kinh, va tinh

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