Perhaps you should try some spelling variations:
phan tien » phan kien, phan bien, phap tieng
thu sach » tu sach, thuat sach, thuoc sach
sach ky » sac ky, sach y, sach ty
va phan » van phan, va phat, va phap
ve cao » va cao, ve cac, ve co
ve bao » te bao, va bao
suc va » duc va, tuc va, luc va
cua tu » cua tuc, cua su, cua cu

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 ky nang x ho. hieu ((ve cao) or (ve bao)) suc va phan tien ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang x ho. hieu ((ve cao) OR (ve bao)) suc va phan tien ((cua te) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang x ho. hieu ((ve cao) or (ve bao)) suc va phan tien ((cua te) or (cua tu))*.