Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
thanh de » hanh de, thanh ve, thanh do
thanh di » thanh doi, thanh do, thanh dinh
cham xuc » chat xuc, cham soc, pham duc
sach va » sach xa, sach ha, sach dao
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
va nang » van nang, da nang, cam nang

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