Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
thanh hai » thanh phan, thanh hoa, thanh san
va triet » va thiet, va trien, ve triet
va thanh » gia thanh, ban thanh, va tinh
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
cac xuc » cac nuoc, chat xuc, cac cuoc
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: tu sach ty nang xa hoi. hieu van ((cac xuc) or (cam xuc)) va thanh hai ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. hieu van ((cac xuc) OR (cam xuc)) va thanh hai ((cua triet) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. hieu van ((cac xuc) or (cam xuc)) va thanh hai ((cua triet) or (va triet))*.