Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
te sach » toc sach
danh de » hanh de, dan de, dang de
va danh » va dinh, va dan, va hanh
hien tu » khien tu, dien tu
hieu tu » chieu tu, hieu tuc, lieu tu
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
sach v » sach va, sach y, sach 2
luc va » duc va, tuc va, loc va
de cua » le cua, te cua, dieu cua
cua te » cua tu

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 v ((nang xa) or (nang ma)) hoi. ((hieu tu) OR (hien tu)) cham luc va danh de cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v ((nang xa) OR (nang ma)) hoi. ((hieu tu) OR (hien tu)) cham luc va danh de cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v ((nang xa) or (nang ma)) hoi. ((hieu tu) OR (hien tu)) cham luc va danh de cua te".
• Adding a wildcard symbol may retrieve word variants: te sach v ((nang xa) or (nang ma)) hoi. ((hieu tu) OR (hien tu)) cham luc va danh de cua te*.