Perhaps you should try some spelling variations:
chinh cua » chinh ca, chinh sua, hinh cua
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
lam xuc » cam xuc, lam duoc
van lam » van nam
ky lang » ky dang, ky tang, tay lang
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ((ky lang) or (ky nang)) xa hoi. hieu van lam xuc ((va hanh) OR (va danh)) chinh cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((ky lang) OR (ky nang)) xa hoi. hieu van lam xuc ((va hanh) OR (va danh)) chinh cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((ky lang) or (ky nang)) xa hoi. hieu van lam xuc ((va hanh) OR (va danh)) chinh cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach ((ky lang) or (ky nang)) xa hoi. hieu van lam xuc ((va hanh) OR (va danh)) chinh cua te*.