Perhaps you should try some spelling variations:
doan truc » doan trung, xuan truc, doan tu
dinh cuu » dinh chi
dau truc » cau truc, dai truc, dau tu
van hanh » van thanh, ban hanh, van ban
su sach » so sach, vu sach
van anh » van thanh, tuan anh, van minh
cuu tre » cua tre, cau tren, cau treo
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang

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 xa hoi. lieu va ((dau truc) or (doan truc)) ((van hanh) or (van anh)) dinh cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. lieu va ((dau truc) OR (doan truc)) ((van hanh) OR (van anh)) dinh cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. lieu va ((dau truc) or (doan truc)) ((van hanh) or (van anh)) dinh cuu tre*.