Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
lang van » dang van, tang van, hoang van
thai cua » than cua, tai cuc, tri cua
cham hoc » cham soc, chat hoc, cham hoi
va hanh » van hanh, va thanh, va danh
tu cham » toc cham, thi cham
hieu tu » chieu tu, hieu tuc, hien tu
su sach » so sach
lang ha » long ha
vu sach » vu bach, vu khach
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: ((su sach) OR (vu sach)) ty ((lang ha) or (lang van)) hoi. hieu tu cham hoc va hanh thai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ty ((lang ha) OR (lang van)) hoi. hieu tu cham hoc va hanh thai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) ty ((lang ha) or (lang van)) hoi. hieu tu cham hoc va hanh thai cua tu".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) ty ((lang ha) or (lang van)) hoi. hieu tu cham hoc va hanh thai cua tu*.