Perhaps you should try some spelling variations:
nang xa » lang xa, nang ma, mang xa
hieu vu » hieu va, hieu ve, hieu su
xuc van » duc van, luc van, vuc van
van han » van hanh, van phan, van nhan
vu sai » vu hai, vu san, vu dai
sai ky » sac ky
vu cam » vu cham, vu cao, va cam
tai va » thai va, tri va, dai va
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sai ky ((nang xa) or (nang x)) hoi. hieu vu cam xuc van han ((tai va) or (mai va)) thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sai ky ((nang xa) OR (nang x)) hoi. hieu vu cam xuc van han ((tai va) OR (mai va)) thiet.
• Adding a wildcard symbol may retrieve word variants: vu sai ky ((nang xa) or (nang x)) hoi. hieu vu cam xuc van han ((tai va) or (mai va)) thiet*.