Perhaps you should try some spelling variations:
tham luc » than luc, tham nuoc, tham thuc
danh tai » doanh tai, dinh tai, hanh tai
dau tren » dau tien, dat tren, dau tieng
ky lang » ky nang, ky dang, ky tang
lang ha » long ha
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, cua triet
te bai » te bao, te tai, te ban
bai ky » ban ky, sai ky, bac ky
ha hoi » hoa hoi, ha noi, xa hoi
luc va » duc va, tuc va, loc va

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 ha hoi. hieu va tham luc va danh tai ((cua tre) or (dau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te bai ky lang ha hoi. hieu va tham luc va danh tai ((cua tre) OR (dau tren)).
• Adding a wildcard symbol may retrieve word variants: te bai ky lang ha hoi. hieu va tham luc va danh tai ((cua tre) or (dau tren))*.