Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
toc sach » hoc sach, doc sach, thuoc sach
van anh » van thanh, tuan anh, van minh
cac cuu » cap cuu, cac cau, cac chu
van cac » van hac, van cau, van bac
nang co » nang cao, nang doc, nang noi
ty nang » ky nang, ty xang, ty hang
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) OR (toc sach)) ty nang co hoc. hieu van cac cuu van anh ((vi cua) or (di cua)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ty nang co hoc. hieu van cac cuu van anh ((vi cua) OR (di cua)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ty nang co hoc. hieu van cac cuu van anh ((vi cua) or (di cua)) cau*".