Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, xuc ban
vai cua » dai cua, hai cua, lai cua
y lang » _ lang, tay lang, yen lang
o lang » hoa lang, hoi lang
ve cam » ve cham, ve cac, va cam
vi cua » di 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 ((y lang) or (o lang)) xa hoi. hieu ve cam xuc van hanh ((vi cua) OR (vai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y lang) OR (o lang)) xa hoi. hieu ve cam xuc van hanh ((vi cua) OR (vai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y lang) or (o lang)) xa hoi. hieu ve cam xuc van hanh ((vi cua) OR (vai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((y lang) or (o lang)) xa hoi. hieu ve cam xuc van hanh ((vi cua) OR (vai cua)) tre*.