Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
hanh tai » thanh tai, hang tai, han tai
tang ha » lang ha, tang ma, trung ha
hieu va » lieu va, hieu qua
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
bai ky » sai ky, bac ky, dai ky
ban ky » van ky, dan ky
ha hoi » hoa hoi, ha noi, xa hoi
luc va » duc va, tuc va, loc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te ((bai ky) OR (ban ky)) tang ha hoi. hieu va cham luc va hanh tai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((bai ky) OR (ban ky)) tang ha hoi. hieu va cham luc va hanh tai cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((bai ky) OR (ban ky)) tang ha hoi. hieu va cham luc va hanh tai cua tre*.