Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
pham thuc » phap thuc, pham chuc, nham thuc
vu khach » vu khanh, vu khac, vay khach
khach ky » hanh ky, thanh ky
thanh va » thanh van, thanh ha, thanh ve
cau tren » cu tren, dau tren, ca tren
thuc xa » thuc xay, tuc xa, thuc va
va pham » van pham, va phat, va phap
hanh va » hang va, hanh vi
nang xa » nang x, lang xa, nang ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu khach ky nang xa hoi. lieu va pham thuc xa ((thanh va) or (hanh va)) ((cua triet) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach ky nang xa hoi. lieu va pham thuc xa ((thanh va) OR (hanh va)) ((cua triet) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: vu khach ky nang xa hoi. lieu va pham thuc xa ((thanh va) or (hanh va)) ((cua triet) or (cau tren))*.