Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
thu sach » thuat sach, thuoc sach, thu hoach
cham xuc » chat xuc, cham soc, pham duc
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
hieu ve » hieu va, hieu van
tu sach » su sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
va nang » van nang, da nang, cam nang
di cau » da cau, diem cau

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