Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
te sach » toc sach
sach ty » sach y, sach tu, sach thu
xang ha » lang ha, tang ha, dang ha
hieu va » hieu qua
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cua tre » cua te, cuu tre, cua triet
ha hoi » hoa hoi, ha noi, xa hoi
luc va » duc va, tuc va, loc va
vi cua » vai cua, di 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 ty xang ha hoi. ((hieu va) or (lieu va)) cham luc va danh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty xang ha hoi. ((hieu va) OR (lieu va)) cham luc va danh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ty xang ha hoi. ((hieu va) or (lieu va)) cham luc va danh vi cua tre*.