Perhaps you should try some spelling variations:
van cham » van chat, van tham, va cham
hieu van » hieu va, thien van, lieu va
thanh ve » thanh va, thanh vien, thanh van
cham toc » cham soc, cac toc, cham o
hanh ve » hanh vi, hanh va, hanh kem
toc gia » toc giay, tac gia, quoc gia
su sach » so sach, vu sach
ty nang » ky nang, ty hang, ly nang
tu tren » tu truyen, tu tieng, tu trong

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) OR (ty xang)) xa hoi. hieu van cham toc gia ((thanh ve) or (hanh ve)) tu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty nang) OR (ty xang)) xa hoi. hieu van cham toc gia ((thanh ve) OR (hanh ve)) tu tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ty nang) OR (ty xang)) xa hoi. hieu van cham toc gia ((thanh ve) or (hanh ve)) tu tren".
• Adding a wildcard symbol may retrieve word variants: su sach ((ty nang) OR (ty xang)) xa hoi. hieu van cham toc gia ((thanh ve) or (hanh ve)) tu tren*.