Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
cham luc » cham soc, nhan luc, cham cuu
hanh doi » hanh noi, hang doi, hanh moi
te sach » toc sach
luc van » luoc van, luu van, duc van
va cham » va chat, va tham
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
tang ma » mang may, tang van
nang xa » nang x, lang xa, nang ma
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 ty ((nang xa) or (tang ma)) hoi. hieu va cham luc van ((hanh doi) OR (thanh doi)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((nang xa) OR (tang ma)) hoi. hieu va cham luc van ((hanh doi) OR (thanh doi)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ((nang xa) or (tang ma)) hoi. hieu va cham luc van ((hanh doi) OR (thanh doi)) cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ty ((nang xa) or (tang ma)) hoi. hieu va cham luc van ((hanh doi) OR (thanh doi)) cua te*.