Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
sach thu » sach thue, sach thieu, sach tham
vu sach » vu bach, su sach, vu khach
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
nang ma » tang ma, sang ma, mang may
xuc va » duc va, tuc va, luc va
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va
cua te » cua tu
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach thu ((nang ma) or (nang cao)) hoi. hieu ve cham xuc va dan vi ((cua te) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach thu ((nang ma) OR (nang cao)) hoi. hieu ve cham xuc va dan vi ((cua te) OR (cua su)).
• Adding a wildcard symbol may retrieve word variants: vu sach thu ((nang ma) or (nang cao)) hoi. hieu ve cham xuc va dan vi ((cua te) or (cua su))*.