Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
va chat » van chat, va phat, cao chat
nang xa » nang x, lang xa, nang ma
ca viet » va viet, co viet, hoa viet
y nang » ky nang, ly nang, v nang
luc va » duc va, tuc va, loc va
ve cam » ve cham, ve cac, va cam

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 ((ve cam) or (va chat)) luc va hanh va ((su triet) or (ca viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu ((ve cam) OR (va chat)) luc va hanh va ((su triet) OR (ca viet)).
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu ((ve cam) or (va chat)) luc va hanh va ((su triet) or (ca viet))*.