Perhaps you should try some spelling variations:
sang lap » sang tao, sang ma, sang tai
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
lap lai » lap tai, lay lai, lam lai
ky sang » ky nang, ky dang, ky tang
ve cam » ve cham, ve cac, va cam
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va
cua tu » cua tuc, cua cu, cua vu
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: su sach ky sang lap lai. hieu ve cam duc va dan vi ((cua te) or (((cua tu) or (cua su))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky sang lap lai. hieu ve cam duc va dan vi ((cua te) OR (((cua tu) OR (cua su)))).
• Adding a wildcard symbol may retrieve word variants: su sach ky sang lap lai. hieu ve cam duc va dan vi ((cua te) or (((cua tu) or (cua su))))*.