Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
thu sach » tu sach, thuat sach, thuoc sach
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
te sach » toc sach
nang xa » nang x, lang xa, nang ma
ve cac » va cac, vien cac
luc va » duc va, tuc va, loc va
y nang » ky nang, ly nang, v nang
ve cam » ve cham, va cam, ve cai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (thu sach)) y nang xa hoi. hieu ((ve cam) or (ve cac)) luc va hanh va su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thu sach)) y nang xa hoi. hieu ((ve cam) OR (ve cac)) luc va hanh va su triet.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thu sach)) y nang xa hoi. hieu ((ve cam) or (ve cac)) luc va hanh va su triet*.