Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
va cham » va chat
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
va tham » van tham, va thanh, va thuat
te sach » toc sach
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
va cam » va cac, va cao, va cai
di cau » da cau, diem cau

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 ty nang xa hoi. hieu ((va cam) or (((va cham) OR (va tham)))) tu va hanh di cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang xa hoi. hieu ((va cam) OR (((va cham) OR (va tham)))) tu va hanh di cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang xa hoi. hieu ((va cam) or (((va cham) OR (va tham)))) tu va hanh di cau tren".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. hieu ((va cam) or (((va cham) OR (va tham)))) tu va hanh di cau tren*.