Perhaps you should try some spelling variations:
giao thanh » gia thanh, gian thanh, giay thanh
hieu cao » chieu cao, hieu cac, hieu ca
chat tac » chat tai, chat thai, thuat tac
tac giao » tac gia, tac giai, tac giam
toan ban » van ban
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
toan va » doan va, tran van, toan tap

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 ty nang xa hoi. hieu cao chat tac giao thanh ((toan va) or (toan ban)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. hieu cao chat tac giao thanh ((toan va) OR (toan ban)) triet.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu cao chat tac giao thanh ((toan va) or (toan ban)) triet*.