Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
van hanh » van thanh, ban hanh, van anh
thu sach » tu sach, thuat sach, thuoc sach
xuc van » duc van, luc van, xuc ban
te sach » toc sach
nang xa » nang x, lang xa, nang ma
ve cac » va cac, vien cac
vi cua » vai cua, di cua
ve tai » te tai, de tai, le tai

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 (thu sach)) ky nang xa hoi. hieu ((ve tai) or (ve cac)) xuc van hanh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thu sach)) ky nang xa hoi. hieu ((ve tai) OR (ve cac)) xuc van hanh vi cua viet.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thu sach)) ky nang xa hoi. hieu ((ve tai) or (ve cac)) xuc van hanh vi cua viet*.