Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va
cam duc » cam xuc, cao duc, pham duc
va tinh » may tinh
tinh ve » trinh ve, tinh ven, dinh ve
ve cua » le cua, de cua, te cua
cua te » cua tu

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 (so sach)) ky nang xa hoi. ((hieu va) or (hieu qua)) cam duc va tinh ve cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (so sach)) ky nang xa hoi. ((hieu va) OR (hieu qua)) cam duc va tinh ve cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (so sach)) ky nang xa hoi. ((hieu va) or (hieu qua)) cam duc va tinh ve cua te*.