Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
hac tuc » thac toc, thai tuc
va danh » va dinh, va hanh, dia danh
luu tre » luu tru, cuu tre, luy tre
y nang » ky nang, ly nang, v nang
va hac » van hac, va khac, va cac
va dan » ca dan, va dao, va dau
vi luu » vi lua

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 y nang xa hoi. hieu va hac tuc ((va danh) or (va dan)) vi luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu va hac tuc ((va danh) OR (va dan)) vi luu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu va hac tuc ((va danh) or (va dan)) vi luu tre*.