Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
sach 2 » sach y
2 nang » v nang
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac
dai su » dai sua, dai so, dan su

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 2 nang xa hoi. hieu ((ve cam) OR (ve cac)) truc va hanh dai su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach 2 nang xa hoi. hieu ((ve cam) OR (ve cac)) truc va hanh dai su triet".
• Adding a wildcard symbol may retrieve word variants: su sach 2 nang xa hoi. hieu ((ve cam) OR (ve cac)) truc va hanh dai su triet*.