Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
thanh va » thanh van, hanh va, thanh ve
thanh ha » thanh hoa, thanh hai, nhanh ha
bo sach » co sach, hoc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cu tren » tu tren, dua tren

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach ky nang xa hoi. hieu van ((cham soc) or (cam xuc)) va ((thanh va) OR (thanh ha)) cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach ky nang xa hoi. hieu van ((cham soc) OR (cam xuc)) va ((thanh va) OR (thanh ha)) cu tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo sach ky nang xa hoi. hieu van ((cham soc) or (cam xuc)) va ((thanh va) OR (thanh ha)) cu tren*".