Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cham xuc » cam xuc, chat xuc, cham soc
mau chau » mau cau, mai chau, mau chan
hanh mau » thanh mau, anh mau, hanh ma
hieu van » thien van, lieu va
chau tre » chay tren, chau tho, cho tre
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cao hoi » cau hoi, co hoi, cao hoc
ty nang » ky nang, ty xang, ty hang
xuc va » duc va, tuc va, luc va

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