Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
phuc van » thuc van, phuc va, chuc van
cau phuc » cau truc, chau phu, huu phuc
cuc tre » duc tre, cua tre, cuu tre
hieu va » lieu va, hieu qua
ky lang » ky nang, ky tang, tay lang
ky dang » ky nang, ky danh
te lai » te bai
va cau » van cau, va cac, va dau
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 tai)) ((ky lang) OR (ky dang)) ha hoi. hieu va cau phuc van hanh tai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te lai) OR (te tai)) ((ky lang) OR (ky dang)) ha hoi. hieu va cau phuc van hanh tai cuc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te lai) or (te tai)) ((ky lang) OR (ky dang)) ha hoi. hieu va cau phuc van hanh tai cuc tre".
• Adding a wildcard symbol may retrieve word variants: ((te lai) or (te tai)) ((ky lang) OR (ky dang)) ha hoi. hieu va cau phuc van hanh tai cuc tre*.