Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
va thanh » ban thanh, va tinh, le thanh
sach ty » sach y, sach tu, sach thu
su sach » so sach, vu sach
ty nang » ky nang, ty xang, ty hang
hieu te » hieu ve, hien te, hieu he
va hanh » van hanh, va danh, ban hanh
ban co » ban do, san co
te ban » te bao
ve cau » ke cau, va cau, ve cac
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu te ban co ((va hanh) or (((va thanh) or (gia thanh)))) ve cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang x hoi. hieu te ban co ((va hanh) OR (((va thanh) OR (gia thanh)))) ve cau tren.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang x hoi. hieu te ban co ((va hanh) or (((va thanh) or (gia thanh)))) ve cau tren*.