Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cham xuc » cam xuc, chat xuc, cham soc
van hanh » van thanh, ban hanh, van ban
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
van anh » van thanh, tuan anh, van minh
cua tuc » cua duc, cua tu, cua thuoc
y tang » ky tang, 7 tang, 5 tang
vi cua » vai cua, di cua

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 ((y tang) or (6 tang)) dai hoc. hieu ve cham xuc ((van hanh) or (van anh)) vi cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((y tang) OR (6 tang)) dai hoc. hieu ve cham xuc ((van hanh) OR (van anh)) vi cua tuc.
• Adding a wildcard symbol may retrieve word variants: thu sach ((y tang) or (6 tang)) dai hoc. hieu ve cham xuc ((van hanh) or (van anh)) vi cua tuc*.