Perhaps you should try some spelling variations:
van khanh » van thanh, van hanh, van anh
dan hanh » dang hanh, dan khanh, dan thanh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, cua triet
ve cham » va cham, ve chat, vu cham
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
vi cua » vai cua, di cua
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky dang xa hoi. hieu ((ve cham) or (ve cac)) thuc ((dan hanh) or (van khanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky dang xa hoi. hieu ((ve cham) OR (ve cac)) thuc ((dan hanh) OR (van khanh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky dang xa hoi. hieu ((ve cham) or (ve cac)) thuc ((dan hanh) or (van khanh)) vi cua tre*.