Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cuu thuc » cuu tac
thuc dan » thuc hanh, hoc dan, thuc vat
dan hanh » dang hanh, dan khanh, dan thanh
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
van cuu » van cau, van chu, van cu
hanh te » hanh tu, hanh ve, hanh de
te cua » tue cua, le cua, de cua
cua tu » cua tuc, cua su, cua cu

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 (su sach)) ky nang xa hoi. hieu van cuu thuc dan hanh te cua tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ky nang xa hoi. hieu van cuu thuc dan hanh te cua tu".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) ky nang xa hoi. hieu van cuu thuc dan hanh te cua tu*.