Perhaps you should try some spelling variations:
lang van » dang van, tang van, hoang van
tham luc » tham nuoc, tham thuc, nhan luc
than luc » nhan luc, than duc, thanh luu
hanh tai » thanh tai, hang tai, han tai
cuu tre » cau tren, cau treo
va hanh » van hanh, va thanh, va danh
ky lang » ky nang, ky dang, ky tang
van hoi » van hoa, van hoc, van hoe
hieu va » lieu va, hieu qua
cua tre » cua te, cua triet, dua tren
te sai » te tai, te bai, te lai
sai ky » sac ky

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

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