Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va danh » va dan, va hanh, dia danh
va dinh » van dinh, va kinh, va tinh
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
cam tu » cam thu, nam tu, dam 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 sac ky nang xa hoi. hieu va cam tu ((va danh) or (va dinh)) va su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. hieu va cam tu ((va danh) OR (va dinh)) va su triet.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. hieu va cam tu ((va danh) or (va dinh)) va su triet*.