Perhaps you should try some spelling variations:
hieu thien » hieu hien, chieu chien, dieu khien
thien cac » hien cac, thien cau, thieu cac
van dinh » van minh, van dich, va dinh
vai cua » dai cua, hai cua, lai cua
va tinh » may tinh
sach ky » sac ky, sach y, sach ty
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
lang ha » long ha
cac bo » bac bo, cac co
cua te » cua tu

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 ((nang xa) or (lang ha)) hoi. hieu thien cac bo ((van dinh) or (va tinh)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang xa) OR (lang ha)) hoi. hieu thien cac bo ((van dinh) OR (va tinh)) vai cua te.
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang xa) or (lang ha)) hoi. hieu thien cac bo ((van dinh) or (va tinh)) vai cua te*.