Perhaps you should try some spelling variations:
nang doc » nang luc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
qua cam » qua cham, qua cac, qua ca
lang ra » lang ha, lang xa, lang va
nang va » nang van, hang va, nang ma
xuc va » duc va, tuc va, luc va
di cua » dai cua, doi cua, de cua
cua su » qua su

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 ky ((nang doc) or (((nang va) or (lang ra)))) hoi. hieu qua cam xuc va hanh di cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang doc) OR (((nang va) OR (lang ra)))) hoi. hieu qua cam xuc va hanh di cua su.
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang doc) or (((nang va) or (lang ra)))) hoi. hieu qua cam xuc va hanh di cua su*.