Perhaps you should try some spelling variations:
thuat tuc » thuat thuc, thuat tu, thuat tac
toc sach » hoc sach, doc sach, thuoc sach
thu sach » thuat sach, thuoc sach, thu hoach
va thuat » ky thuat, ki thuat, va thuc
tu sach » su sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
di cua » dai cua, doi cua, de cua
cua su » qua su

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) or (toc sach))) or (thu sach)) y nang xa hoi. lieu va thuat tuc va hanh di cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu sach) OR (toc sach))) OR (thu sach)) y nang xa hoi. lieu va thuat tuc va hanh di cua su.
• Adding a wildcard symbol may retrieve word variants: ((((tu sach) or (toc sach))) or (thu sach)) y nang xa hoi. lieu va thuat tuc va hanh di cua su*.