Perhaps you should try some spelling variations:
phat luc » nhan luc, phat huy, chat lua
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau tren, cau treo
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
te sach » toc sach
le cuu » le cua, le huu, le cau
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 tang ma hoa. hieu va phat luc ((va hanh) or (va danh)) le cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (te sach)) ky tang ma hoa. hieu va phat luc ((va hanh) OR (va danh)) le cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sac) OR (te sach)) ky tang ma hoa. hieu va phat luc ((va hanh) or (va danh)) le cuu tre*".