Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
qua nham » qua nhat, qua cham, sua nham
nham thu » nham thuc, nam thu, pham thu
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va hang » van hang, va nang, va lang
hang di » hang doi, hang vi, hang dien
thu va » thuc va, thue va, tu va
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: su sach ky nang xa hoi. hieu qua nham thu va hang di ((((cua triet) or (cua te))) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu qua nham thu va hang di ((((cua triet) OR (cua te))) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu qua nham thu va hang di ((((cua triet) or (cua te))) or (va triet))*.