Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cham xuc » chat xuc, cham soc, pham duc
cai tren » cai tien, ca tren, cau tren
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
sach o » sach lo, sac o, sach y
o lang » hoa lang, hoi lang
va dan » ca dan, va dao, va dau
dan de » dan den, dang de, van de
de cai » de tai, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach o lang xa hoi. hieu ve ((cham xuc) or (cam xuc)) va dan de cai tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach o lang xa hoi. hieu ve ((cham xuc) OR (cam xuc)) va dan de cai tren.
• Adding a wildcard symbol may retrieve word variants: thu sach o lang xa hoi. hieu ve ((cham xuc) or (cam xuc)) va dan de cai tren*.