Perhaps you should try some spelling variations:
nang tai » hang tai, tang tai, sang tai
cham luc » cham soc, nhan luc, cham cuu
nang mai » nang ma, lang mai, nang cai
hanh ve » hanh vi, hanh va, hanh kem
va hanh » van hanh, va thanh, va danh
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach kem
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
luc va » duc va, tuc va, loc va
ve cua » le cua, de cua, te cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ky) or (sach ty)) ((nang mai) OR (nang tai)) hoi. hieu ve cham luc va hanh ve cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach ty)) ((nang mai) OR (nang tai)) hoi. hieu ve cham luc va hanh ve cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) or (sach ty)) ((nang mai) OR (nang tai)) hoi. hieu ve cham luc va hanh ve cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) or (sach ty)) ((nang mai) OR (nang tai)) hoi. hieu ve cham luc va hanh ve cua tre*.