Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
dau tren » dau tien, dat tren, dau tieng
thanh di » thanh doi, thanh de, thanh do
cham xuc » chat xuc, cham soc, pham duc
hieu ve » hieu va, hieu van
tu sach » thu sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
va nang » van nang, da nang, cam nang
su sach » so sach, vu sach
di dau » doi dau, bi dau, di du

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) OR (su sach)) va nang xa hoi. hieu ve ((cham xuc) or (cam xuc)) ban thanh di dau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) va nang xa hoi. hieu ve ((cham xuc) OR (cam xuc)) ban thanh di dau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) va nang xa hoi. hieu ve ((cham xuc) or (cam xuc)) ban thanh di dau tren".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) va nang xa hoi. hieu ve ((cham xuc) or (cam xuc)) ban thanh di dau tren*.