Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
cuc tre » duc tre, cua tre, cuu tre
hieu va » lieu va, hieu qua
luc van » luoc van, luu van, duc van
cau luc » cau truc, cau phuc
ky lang » ky nang, ky dang, ky tang
lang ha » long ha
va cau » van cau, va cac, va dau
te bai » te bao, te ban, tu bai
ha hoi » hoa hoi, ha noi, xa hoi

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

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