Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cau tren » cu tren, dau tren, ca tren
ban hanh » ban hang
ky lang » ky nang, ky dang, tay lang
ky tang » ky nang, ky dang, kho tang
hieu va » lieu va, hieu qua
cau luc » cau truc, cau phuc
luc ban » duc ban, cuc ban, luc bat
te bai » te bao, te tai, te ban
va cau » van cau, va cac, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: te bai ((ky lang) OR (ky tang)) xa hoi. hieu va cau luc ban hanh kem ((cua triet) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te bai ((ky lang) OR (ky tang)) xa hoi. hieu va cau luc ban hanh kem ((cua triet) OR (cau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te bai ((ky lang) OR (ky tang)) xa hoi. hieu va cau luc ban hanh kem ((cua triet) or (cau tren))".
• Adding a wildcard symbol may retrieve word variants: te bai ((ky lang) OR (ky tang)) xa hoi. hieu va cau luc ban hanh kem ((cua triet) or (cau tren))*.