Perhaps you should try some spelling variations:
van lanh » van anh, van hanh, van manh
thu sac » thu sach, thu san, thu dac
cua tre » cua te, cua triet, dua tren
luc van » luoc van, luu van, duc van
cac luc » cau luc, coc luc, cac nuoc
hieu va » lieu va, hieu qua
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
thu xac » thau xay
cuu tre » cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sac) OR (thu xac)) ky tang xa hoi. hieu va cac luc van lanh dao ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sac) OR (thu xac)) ky tang xa hoi. hieu va cac luc van lanh dao ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sac) OR (thu xac)) ky tang xa hoi. hieu va cac luc van lanh dao ((cua tre) or (cuu tre))*".