Perhaps you should try some spelling variations:
thien van » thi van
thu sach » tu sach, thuat sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
hanh di » hanh vi, hanh de, hang di
lam cuu » lam cua, cham cuu
ly nang » ky nang, ly hang, ly vang
sach ly » sach y, sach lo, sach ty
di cua » dai cua, doi cua, de cua
cua te » cua tu
x hoi » o hoi, x ho, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ly nang ((x hoi) or (xa hoi)). thien van ((lam cuu) or (lam chu)) van hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ly nang ((x hoi) OR (xa hoi)). thien van ((lam cuu) OR (lam chu)) van hanh di cua te.
• Adding a wildcard symbol may retrieve word variants: thu sach ly nang ((x hoi) or (xa hoi)). thien van ((lam cuu) or (lam chu)) van hanh di cua te*.