Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cau thuc » cau truc, cuu thuc, can thuc
dua tren » dung tren
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
thuc va » thuc vat, thuc dan, thuc day
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua thep
ty nang » ky nang, ty xang, ty hang
su sach » so sach, vu sach
va cau » van cau, va cac, va dau

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 cau thuc va thanh vi ((((cua tre) or (dua tren))) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. lieu va cau thuc va thanh vi ((((cua tre) OR (dua tren))) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. lieu va cau thuc va thanh vi ((((cua tre) or (dua tren))) or (cua triet))*.