Perhaps you should try some spelling variations:
lam chat » luan chat, cao chat, ly chat
hieu van » hieu va, thien van, lieu va
van chao » van chat, van hao, van cho
xuc ban » duc ban, cuc ban, quoc ban
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
xu ban » tu ban, vu ban, xu bac
lam va » nam va, dam va, lam ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty nang xa hoi. hieu van chao ((xu ban) OR (xuc ban)) hanh ((lam va) or (lam chat)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang xa hoi. hieu van chao ((xu ban) OR (xuc ban)) hanh ((lam va) OR (lam chat)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty nang xa hoi. hieu van chao ((xu ban) OR (xuc ban)) hanh ((lam va) or (lam chat)) triet*".