Perhaps you should try some spelling variations:
trinh vat » trinh luat, sinh vat, trinh han
trinh van » trinh han, trinh quan, trinh toan
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
ma khoi » mai khoi, ra khoi, xa khoi
hieu vi » hieu voi, hieu va, hieu ve
cua te » cua tu
pham » phan

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 ma khoi. hieu vi pham duc va ((trinh vat) or (trinh van)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang ma khoi. hieu vi pham duc va ((trinh vat) OR (trinh van)) cua te.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang ma khoi. hieu vi pham duc va ((trinh vat) or (trinh van)) cua te*.