Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
su triet » su viet, su tien, ve triet
dam thuc » am thuc, dan thuc, nam thuc
hieu va » lieu va, hieu qua
va tinh » may tinh
tinh vi » trinh vi, tinh voi, tinh va
nang xa » nang x, lang xa, nang ma
su sach » so sach, vu sach
cam tu » cam thu, nam tu, dam tu
y nang » ky nang, ly nang, v nang

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 y nang xa hoi. hieu va ((cam tu) or (dam thuc)) va tinh vi ((su triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu va ((cam tu) OR (dam thuc)) va tinh vi ((su triet) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu va ((cam tu) or (dam thuc)) va tinh vi ((su triet) or (va triet))*.