Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
van hanh » van thanh, ban hanh, van anh
va thanh » gia thanh, ban thanh, va tinh
sach ty » sach y, sach tu, sach thu
vai cau » va cau, van cau, vai cac
su sach » so sach, vu sach
nang co » nang cao, nang doc, nang noi
hieu ve » hieu va, hieu van
ty nang » ky nang, ty xang, ty hang
va hanh » va danh, ban hanh, dao hanh
ve cam » ve cham, ve cac, va cam
co hoi » co hoc, co loi

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty nang co hoi. hieu ve cam xuc ((((va hanh) OR (va thanh))) or (van hanh)) vai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang co hoi. hieu ve cam xuc ((((va hanh) OR (va thanh))) OR (van hanh)) vai cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang co hoi. hieu ve cam xuc ((((va hanh) OR (va thanh))) or (van hanh)) vai cau tren".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang co hoi. hieu ve cam xuc ((((va hanh) OR (va thanh))) or (van hanh)) vai cau tren*.