Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cham luc » cham soc, nhan luc, cham cuu
luu tre » luu tru, cuu tre, luy tre
ve cham » va cham, ve chat, vu cham
te sach » toc sach
nang xa » nang x, lang xa, mang xa
luc van » luoc van, luu van, duc van
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
vi luu » vi lua
te sac » te cac, te san

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

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